While i do not like the way you phrase it, i do have to agree a tiny bit. The Rainbow flag agenda is getting abit to extreme, even for me and forcing it on a historical event is maybe uncalled for. I am not that offended, i just don't see the point either. Like Lady Artifice pointed out earlier, it is not the first time someone has used that image to prove a point or for parody/comedy. I don't see why it is different this time.
It's not the first time, but this is a symptom of a wider problem which is present in western society, you have a clique of hard-line left wing radicals which are grandstanding and attention whoring on all of these types of issues, while the Political sphere currently leaning left catering to their whims at every turn irrespective of the fact those claims can be based on complete horseshite, while the hacks in the left wing media are screaming at everyone that there is a rape culture, feminists being oppressed, gays being victimised and how our society is so institutionally racist and homophobic we should be disgusted and ashamed, but you can't question it and asking for evidence of that is just being a bigot.
Funnily enough, people are getting tired and pissed off by it, this is the kind of thing which adds to an already long list of grievances, when most people really couldn't care less, most have better things to worry about than gay marriage being legalised, great it was... we're still talking about this how many weeks after?The cliques however always decide to play the holier than though art card and rub it everyone's face, while keeping it in the spotlight, and it's wearing thin.
Especially as they're also abusive pricks, for instance, Christian Bakery in Ireland refused to produce a cake saying support Gay marriage because it was against their beliefs, they'd supply them with a cake, just not one with that lettering, the Gays sued them for discrimination, and the court found against bakery despite their own religious beliefs being impinged by the ruling.
That kind of behaviour by the social justice crowd rubs a lot of people up the wrong way, they go looking for a fight and the political left wing and media will jump open it with glee. And the SJWs have been doing this kind of thing for a while, that's why they're hated so much, it's the same kind of behaviour they're doing here, they're antagonistic attention seekers, but when they're turned on they scream oppression or whatever flavour of the month ism they've come up with and attempt to censor and silence criticism.
Personally, I don't like religions much for a whole host of reasons, but I despise and hate hypocritical attention whores, who hide behind a buzzword to cow people into silence even more.