It does help that the overarching theme of the right is centered around taking as much for yourself as possible and not caring about the collateral damage. The right is full of single-issue voters who might, say, not actually explicitly hate gay people but who also don’t give a shit about their rights and safety if it means they can keep their guns. The left, almost definitionally, needs to consider the complexity inherent in not being able to ignore the effects that any given policy might have on others and this means that there is so much more opportunity for conflict.

You’re correct, of course, I’m just pointing out the difference such that it might help attack the issue from a better perspective.