A Just Stop Oil activist filmed a video in tears from the top of a 275ft bridge after his protest saw traffic on the M25 grind to a halt.
Essex Police closed the Queen Elizabeth bridge in Dartford to thousands of drivers in the early hours of Monday morning.
Morgan Trowland, 39, was overcome with emotion as he spoke into the camera, saying he did not want to "sit back and watch everything I love burn for the rest of my life."