 These are etiquette mistakes that make everyone hate you. This is main character syndrome at its worst. If the artist wants the show to be interactive, they'll let you know. It's understandable you want to be close for your fave, but if there are other artists before them, either participate in the show or get out of the way for their fans. But Mitzki nicely asked her fans not to do this. She got roasted so hard she deleted the tweet. A snip it is fine, but then put your phone away and just enjoy the show.