I have attempted too, to reason with the people of Kenosha Parkour. This is what i said...
"Jeremy is right. He wasn't trying to be offensive. Rooftops are illegal and it doesn't set a good name for parkour if you run from the cops and use it for illegal purposes. There was no need for the comment that said he doesn't have to be jealous. It is great that your are training parkour but it should be done in the right way. I have trained with the Yamakasi and they would definitely not approve of the discipline being portrayed as you show it. Parkour is about what you said it is up there, but that comes with some responsibility. If you have not heard Parkour was made an anti-social activity in Moreton in the UK because people were using parkour like you guys are using it. That could happen in Kenosha. Parkour is new to America and needs to be shown in a positive light, otherwise you might see no parkour signs just like skateboarding has. It only takes a few people to ruin something for everyone. You wouldn't want to be those people that ruin parkour would you? If so continue training the way you train. Just don't label it parkour/freerunning. It wouldn't be fair to all the other traceurs in not only Kenosha, but all of America too. So train hard, train safe, and train right. Set a good example so that other might follow it."
I hope they at least take something from what i wrote. We can only hope and try to educate, and if all else fails do what Marquiz says.
Also Jeremy if these guys don't come around I would go to the police station in Kenosha and explain the difference between what you do (parkour) and what these guys do (non-parkour???) just so you don't get caught up in it when they get in trouble. Also so parkour doesn't take a hit on the behalf of these guys.