It's easy to find the more unsavory parts of any major city while scrolling YouTube. When I was a kid, Kensington was the football (soccer) capital of the East Coast. In fact on one small block there was 12 football/social clubhouses, Kensington back in the day, was a solid working class neighborhood full of wonderful people who cared for and looked after one and other. As you can see, those days are gone.
Anyone coming to Philadelphia for the City match will not/shouldn't be anywhere near Kensington, unless you care to be involved in nefarious activities.