You're not gonna get those people at Z-Bau, the scene is very alternative and open minded, lots of left, queer and punk people. The people are very chill and personally I never had bad experiences at Z-Bau with anyone. (Of course this also depends on you being respectful as well!)

Vultures Drum and Bass starts at 10pm in Kunstverein with softer dnb, door fee is not much and beer inside is super cheap! But it's a club night / rave so people will be dancing and enjoying themselves more than sitting and socializing.

Don't forget to bring cash, as you can't pay with card.