This is probably a dumb question [new to ARMY here] what is a sasaeng & the whole BTS anti thing?

based on what i read on twitter, bitbybit (and a few other fansites) are sasaengs meaning they follow bangtan around everywhere - even on unannounced, private schedules. they buy info from staff/people close to the idols ((this is very common; more common than you think)) + bitbybit and view_951230 have private accs where they tweet hate tweets towards other members and even their “biases.” bitbybit has tweets calling jimin “son of a bitch” for posting ugly kook photos and calling rm ugly and saying that jungkook opening a chatroom for fans on the fancafe is not “being drunk in love with fans” but that jungkook is drunk and is a drunkard ++ bitbybit has been banned by bighit on the fancafe