@SECRET_ASIAN_MAN: Because they view it a) as a game, b) as a source of huge income, and c) they've learned over the decades from both Dems and the GOP that the government's job is really to tell people what to do rather than listen to what the people have to say. More particularly, it's to force cultural changes the party in charge wants, and because they get the votes, however they manage it, it's legal if the follow procedures and don't get caught cheating.
@SECRET_ASIAN_MAN: Also, they're being unprofessional, classless, bloviating, ignorant, dangerous fuckwits because they are legit representing their voter base. They're behaving the way their base wants them to behave, the way they themselves behave or at least wish they could behave at work but do in public and at home.