The fuck are you talking about? Did OP personally call you scum? If you are unaware of the suffering of others, that doesn't make you a dickhead, it just makes you ignorant. 

However, being aware of the suffering of others and choosing to actively ignore it is in fact a shitty thing to do, yes. Nobody is asking for you to go out in the street and set shit on fire. They're just asking to be able to marry, own property, have jobs, and be allowed to exist in the public eye without being scrutinized or punished for being gay. That's all being supportive means. Allow them to be equals.