In the clip, the police chief and the protest leader meet at Hvitfeldtska gymnasiet, where chaos erupted 20 years ago.

On Monday, it is on the day 20 years since the Gothenburg riots.

Police Chief Erik Nord describes the threat picture before the summit in Gothenburg.

There were also violent extremists in the ranks of the peaceful protesters.

Information from inside Hvitfeldtska gymnasiet, where hundreds of protesters lived, talked about barricades and weapons.

Container wall

The police management decided to encircle the entire school with a large container wall on Thursday, June 14, 2001. In the evening, everyone who was stuck inside the barrier was arrested.

But when the police searched the school, no weapons were found.

The police explanation is that perpetrators of violence had had the opportunity to sneak out while the wall was being built.

Lost control

At the time, Anders Svensson represented the Gothenburg campaign - an umbrella organization for a number of protesting groups - and was in charge of the three large demonstrations.

He says that the police's information was false and that it was the container wall that caused both the peaceful protesters and the police to completely lose control of the violent course of events that followed.

Suffering and lessons learned

The EU summit and George W Bush's visit could be carried out largely on schedule.

But the costs were high, both in terms of material destruction and in human suffering.

At the same time, a number of lessons were learned, not least from the police.

The whole tactic of intervening against a crowd has changed and is now much less confrontational than then.