Black people have one of the lowest suicide rates compared to any other ethnic group in the US, and even more so when it comes to suffocation, yet they conveniently always find black people hung outside and always rule it a 'suicide'.
This is nothing more than a public execution. The fact that they can always quickly rule out foul play lessens the public reaction. Heck, it might even be the police themselves doing it. Police officers as members of the kkk and other white nationalist groups isn't anything new.