I lived in Overland Park for a decade. There was never anyone in pointy hats. My neighbors on one side were from Australia and on the other side a mixed couple with the guy from India. There are lots of people from all over the US too. Rather diverse actually.
There are dangerous places like any city. Most of the suburbs on either side aren't. You can play around with crime reports to figure out the bad areas and times. North KC,MO at night probably isn't a good idea unless you're in the safe pockets around shopping and nightlife.
https://www.crimereports.com/city/Kansa ... e_id=false
Both states now have constitutional carry.
I worked on the Kansas side and my wife on the MO side. The roads are better cared for on the Kansas side. Nobody sends their kids to the KC, MO schools, so most people move outside of that part of the city if they have kids and can't afford to send their kids to private school. When I lived in the area that district was run by the courts and the graduation rate was ~50%. The FBI arrested several school board members and some of the city officials for corruption.
The metro area is low density like most of the cities in this part of the country so you have to drive everywhere since things are very spread out.
Try Joe's Barbecue in the Roeland Park area of KC, KS.