Everything banned at All-Star concert

With the All-Star Game coming to Cincinnati next week - gee, I don't remember voting for this - local taxpayers are on the hook for millions of extra dollars, and police resources are being drained from the rest of the city, putting residents at risk.

And if you're attending the Demi Lovato concert at Paul Brown Stadium tonight, you really have to watch out! That's because pretty much everything is banned. The thought guardians released a voluminous list of things that concertgoers aren't allowed to bring to the stadium. (Ooh, an Allowed Cloud!) They range from thermoses to "indecent" clothes to just about everything else.

The stadium will be searching folks with a metal detector and checking bags.

This is acceptable in a supposedly free country because...?

I repeat: This is acceptable in a supposedly free country because...?

(Source: http://www.wcpo.com/sports/baseball/reds/all-star-game/all-star-concert-dont-bring-these-things-to-see-demi-lovato)