Donald Trump supporters heckle London Mayor Sadiq Khan during speech at Fabian Society

The transcript involves a discussion at a conference where the speaker assures attendees that Mr. Khan will not leave the event. The speaker requests cooperation from the attendees to continue the conference and mentions that the police will be involved, allowing attendees to speak with them upon arrival.

What is the overall tone of the speaker during the discussion?

What will happen when the police arrive according to the speaker?