The video shows Mr. Acosta never touched the intern.
A few adds:
She is not an intern, but a paid staffer at the WH.
The WH later released an edited version of this video which had been doctored to make it look sinister and as if Mr. Acosta had ‘chopped’ his arm down on her. (this was done by speeding it up).
It may or may not have been the WH who doctored the video (Info Wars is mentioned as a possibility) but they knowingly posted a fake video.
That is propaganda.