Ken Livingstone delayed a Tube full of passengers after getting his foot stuck in the door.
Video posted online shows Mr Livingstone arguing with a London Underground worker who tells the former London Mayor he "should know better".
As he battles open the doors at Willesden Junction, Mr Livingstone is heard shouting "You’re trying to push me over. Open and let me get on!".
One passenger commented:
Ken Livingstone decided to hold up our train because he purposely stuck his foot in when the door was blatantly closing. Now I’m going to be late for work.