David explains this very clearly:
https://www.youtube.com/watch?v=izwMz7mJ9pE
If you wish to politely share your opinion of what has happened with Leicestershire Police and Leicester City Council - these are the mail addresses:
For the Chief Constable - Simon.Cole@leicestershire.pnn.police.uk
For the unit which employs Bill Knopp: preventengagement.team@leicestershire.pnn.police.uk
For the Mayor of Leicester: themayor@leicester.gov.uk
Email Leicestershire Police Prevent Team or Call 0116 248 6726.
Email the Leicester, Leicestershire and Rutland Prevent co-ordinator or call 0116 273 3459