Or just grow up and have the self control to ACTUALLY ignore UA without needing to click an icon. Really, what are you people doing, seeing his posts and becoming so overcome with rage you can't help but respond? Have sex already, the tension is unbearable.
Regarding shows, be cool, dude. Enjoy the music, enjoy yourself, its a public environment like any other so have some manners except you're allowed to headbang and mosh if you wanna without judgment. Don't stress over it. Oh yeah and depending how packed the show is it'll probably be hot as fuck so opt for short sleeves