Tokio Hotel fans (and anyone else ): Does this group of girls who calls themselves...?

honestly i do see them as having some kind of problem. they stalked tokio hotel for 6 months including attacking the twins mother, several of their friends, and standing outside of their houses in masks and headscarves. while also sending threatening messages to them (WE ARE NOT HAPPY! we will be your little nightmare) and i have a hard time understanding why they would want to harm a band they like (or in this case obsess over) and if they HATE tokio hotel why stalk them? it confuses me. at the same time they scare me because i honestly fear for the bands and their friends/families safety with those girls there.