The people who set up this exhibition are no less despicable than pornographers, but like pornographers, they serve an important function. Their offensiveness, unless it involves children or intentionally incites violence, does no harm, and it keeps the First Amendment alive. Freedom to do only what everyone likes isn't freedom at all.
I'm a little dismayed that Connie drank the ISIS Kool-aid by promoting the idea that ISIS was behind the two fools who attacked the show. ISIS is hurting from the beating we're giving them, and they desperately want to convince Americans that they can strike back. Connie just joined that effort.
Stupidity works for them.