True, that's one of the main reasons why the current terror operations keep extending. I sense hosility and double standard towards Turkey. They know damn well YPG and PKK are connected, in Iraq they're YPG when they cross the border they become PKK. They made up a terror problem called ISIS, everyone is there to so called fight terror but all they're doing is benefiting from the situation. We're witnessing how they suddenly made up excuses to plant a PKK terror state on Turkish South-Eastern border.
There's no footage i know of, except one fake video.
Unfortunately US has two faces towards it's allies. They're scared Turkey will spread its influence to Syria and other Arab countries. They don't want unity in that region and certainly not under a Turkish leadership. This happens cause of several reasons, to ensure their interests in that region and also to keep Israel as the dominant power.