I've lived on Wayne Street for several years now.
The mini-park as well as the apartments next to them are inhabited with (for the most part) unemployed, drunken, drug dealing lowlifes. Disturbing? Yes. However these lowlifes are generally harmless. Yes they may make lewd comments to attractive women walking down Wayne street but thats about the extent of it. Cars do get broken into in this area but no more or less than other areas of downtown Jersey City. There's a gay bar on the corner of Wayne and Grove but it's nothing raunchy. I pass by it every day on the way to the Path Station and it took me a few months to realize that there are always tons of guys dressed in business casual hanging out there but no women. Lowlifes do pass through the area from other areas so (just like any urban city) you have to keep you wits about you. There has been on rare occasion "gun play" on Wayne street. But the targets didn't live here and most likely did something to get targeted. Not too bad as you will find soccer moms pushing strollers down this street during the night. Grimier than Newport or Exchange Place but still a good neighborhood.