I swear police are trying to single me out.

I'm homeless. And I stay in a public park almost every night. The park closes at 9. There's other homeless people who also stay here. 2 police officers came by and basically told me I had to leave by 9 or they would have to force me to leave. I understand if they are just trying to flush out homeless people but where am I supposed to go. Plus they didn't even talk to other people just me and then left.