Flying about the internets is an animated GIF of what appears to be a big football player in football gear “check” (ram into someone and knock them over) Donald Trump after exiting a tour bus, so that he falls backwards onto the bus.
Actually, it is an edited clip from a commercial for Terry Tate, which you can find below in full. Terry Tate is a character from a series of short comedy commercials called, “Terry Tate: Office Linebacker” created by Rawson Marshall Thurber. The first commercial was shown during the 2003 Superbowl, and several others were produced thereafter. The character was brought out of ‘retirement’ to make a commercial to encourage voting in the 2016 US election, shown below in its entirety (or linked directly here).
TW: The dialogue of the actual commercial below includes Trumps infamous “grab them” audio.