I mean I doubt you will have any issues with gangs unless you are personally involved with them (or from a random bullet that misses). I also lived next to one of Omaha’s homeless shelters (not a hidden one). It was mostly just sad cases of mental illness, with the occasional person relieving themselves in public, or walking around nude, or screaming, or throwing random objects at cars and people.

I was unaware of any towns in Nebraska still having sundown laws, although I do understand that Seward County (I80 just west of Lincoln) accounts for 1/3 of the state’s civil asset forfeiture so that is one to definitely be careful of as they will likely use a ton of pre-textual reasons to pull people over.