On June 6, 2007, a German man tried to jump into Benedict XVI's uncovered popemobile as the pontiff began his general audience. The pope was not hurt and did not even appear to notice that the man had jumped over the protective barrier in the square and had grabbed onto the white Fiat popemobile as it passed. At least eight security officers were trailing the vehicle as it moved slowly through the square. They subsequently grabbed the man and wrestled him to the ground, before he was interrogated by Vatican police.

https://en.m.wikipedia.org/wiki/Popemobile