There was a lot more that happened that was not shown on that video. Neighbors and those reporting this to 911 said the kids were running wild and cursing the police.
I can't make a judgment just on the video b/c of all the circumstances involved. On the surface it did a appear the one officer was a bit heavy handed. That is just on the surface, however. I live not too far from this and I can't see this getting out of hand. The racial agitators will not be welcome here.