The Brit who Tried to Kill Trump is a 2017 sociopolitical documentary narrated by Adrian Bower about Michael Sandford who attempted to kill the current president of the United States.
In May 2016 Michaels parents in Britain reported to police that he had gone missing in the United States. He later went to a Trump rally in Las Vegas, just after Trump took to the stage to make his speech he attempted to take a gun from a cop who was overseeing the event. While he failed to take the gun, in an interview he stated that his intention was to shoot the Republican candidate.
This documentary explains what happened and why someone from a different country had such intentions.