RiouHotaru wrote...
Akuze
This is arguably the most prominent crime on their list, seeing as it's possible they're directly responsible for luring the marines and the thresher maws together. Toombs claims this possibility is the truth, but at best, Cerberus knew where the marines were going and did nothing to stop them, wanting to observe and measure the result and outcome. The fact they then kidnap Toombs and experiment on him, probably for years, is just insult upon injury.
Correct me if I'm wrong but Akuze was carried out when Cerberus was still under Alliance oversight, so it's as much their crime as anyone elses. Furthermore when developing defenses against and treatments for various forms of attack the only real way to di it is to have someone be attacked. Now waiting for this to happen isn't viabl as you can't know when, or where, such attacks will take place. Akuze was bringing the inevitability of a Thresher Maw encounter into a controlled environment to allow for observation and analysis. To put another way, the only way to test anti-venom is for someone to get bit.
RiouHotaru wrote...
Admiral Kohoku
Another prominent crime in Cerberus' belt, they killed Kahoku for tracking them down, to keep him from exposing them (little good it did them, Shepard finds them and finishes the job). However, the apologists like to claim that Kahoku was either a traitor or a "security leak" (under this silly theory that Cerberus is still a part of the Alliance). But nowhere do the apologists explain the reasoning behind Cerberus purposefully luring his men out just so a thresher maw would ruin them. There's nothing of importance in that system, and unless Cerberus was trying to replicate Akuze, this action seems almost purely for the lulz.
Kahoku's men were investigating Armistan Banes death. Now if Banes had some connection to Cerberus, either they were responsible for his death or he was an agent or the list goes on, then in order to maintain their secrecy Cerberus must eliminate Kahoku's men. What better way than to arrange for their death to look like an accident, tragic but not anyone's fault. The soldiers are mourned and no one is the wiser. The problem was Shepard found out it wasn't an accident, told Kahoku, and Kahoku started looking into it. Now at this point all responsibility for Kahoku's death falls on Kahoku. As soon as he found out who he was dealing with he knew, and he says as much in his message, that he was signing his death warrant by pushing forward. He chose to do so, believing it to be the right thing, and paid the price. He could have walked away, he could have let it slide, he chose not to and in doing so left Cerberus with no alternative.
Now that's all dependent on Banes having some connection to Cerberus. If not then it's possible this was a follow up mission to Akuze to test the effectiveness of the countermeasures they've developed.
RiouHotaru wrote...
Chasca, aka UNC: Colony Of The Dead
This one gets a lot of attention for the heavily debated fact of whether or not Cerberus was responsible for this, mostly due to the claim that there is no specific information implicating Cerberus, except for the presence of their agent. However, the game explicitly states that Cerberus is responsible, meaning they had the Dragon's Teeth delivered to the colony with the intention of having every member of the colony turned into husks for study. Several logs speak of the Cerberus agent who was present who left, and finishing the mission nets you the message "Cerberus has a lot to answer for." There's really no way to argue against this when the GAME ITSELF declares you guilty.
The game is played from Shepard's perspective (mostly). This is important to note, it appears that things went down as you said, but we have no real way of knowing that. So let's look at what we know; Cerberus had Dragon's teeth delivered to the colony, Cerberus had an agent on the colony, that agent left, the colony was turned to husks. Given what we know about the Dragon's Teeth and Reaper technology in general it's entirely possible Cerberus sent the Dragon's Teeth for study, the agent, on noticing odd behaviour among the colonists (and perhaps themself) leaves the colony to report from a more secure location, the colonists begin throwing themselves on the Dragon's Teeth, colonists become husks. That's a possible explanation of what happened, by no means the only explanation but one must always acknowledge how much we do not know when judging someones actions.
RiouHotaru wrote...
Trident
The Cerberus Daily News reported back in January about a Cerberus Cell in the Terminus Systems which was experimenting with biotic-suppressants which had a number of incredibly nasty and potentially lethal side effects on humans AND aliens, dubbed the "torture den." On top of that, they decide to blow up police cars and kill law enforcement to spring one of their allies out of jail. Hard to deny you're terrorists now, huh?
Again, like Akuze, there's only one way to test something like this. It's unpleasant, morally questionable, and cold but it's a fact of life. And yes like many medical tests there are going to be people who suffer in the testing phase, unfortunate but inevitable.
RiouHotaru wrote...
Tetlin/Pragia
Yeah, experimentation on humans is already a morally gray area approaching on black, let's just go full-black by experimenting on children, torturing them and killing them in order to decide what is or isn't a good procedure to use on one specific child (Jack aka Subject Zero) because she has incredible biotic powers that you gave her a result of earlier torture and experimentation, which was likely done of them for YEARS.
Again this was done when Cerberus was part of the Alliance so think about where you really want to point that finger. Yes what they did was morally and ethically wrong. However when playing technological cath-up with aliens who have at least a millenia on us you can't afford to take things slow. The research was brutal but fast and clearly effective. Ends justify the means.