There isn't a whole lot around the Philly venue to bust up. Philly PD did a good job with the Papal visit. This is a lot less people, and a much more finite venue.
Haven't been to Cleveland, yet, to see the venue and the surrounding area first hand.
“The conventions are going to be the standard show on the inside. It is outside the venues that should concern people. The local departments are going to have to lock down the chaos in the streets. I am expecting disruptive and riot style behaviors in both cities.”
You must be in law enforcement, the military, secret service or retired from one of them. Or you are just extremely intuitive about these matters. You are right, what goes on inside, which I expect Trump winning more than 1237 votes will solve as a problem, will not neutralize what will take place outside of the conventions, both Dem and Pub. Those venues will indeed have to be patrolled heavily for lots of disruptions that are almost guaranteed to take place.