One witness, Anna Branthwaite, a photographer, described how, in the minutes before the video was shot, she saw Tomlinson walking towards Cornhill Street.
"A riot police officer had already grabbed him and was pushing him," she said.
"It wasn't just pushing him – he'd rushed him. He went to the floor and he did actually roll. That was quite noticeable.
"It was the force of the impact. He bounced on the floor. It was a very forceful knocking down from behind. The officer hit him twice with a baton when he was lying on the floor.
"So it wasn't just that the officer had pushed him – it became an assault.
"And then the officer picked him up from the back, continued to walk or charge with him, and threw him.
"He was running and stumbling. He didn't turn and confront the officer or anything like that."
The witness accounts contradict the official version of events given by police.