Conservatives have been behind every bullshit moral panic for well over 100 years. Hell, within the last few weeks we've seen them coerce Visa and MasterCard into banning video games they don't like.

If this guy doesn't meet the standards to perform at a government facility then that's what it is. There are a lot of bands I like that I wouldn't expect to he approved either. Imagine the conservative outrage if Nine Inch Nails were to perform Hersey in public (especially when you contrast the music with how nice Trent Reznor seems to be).