So British police will proactively raid the houses of environmental activists to seize protest materials, but they took no action against the Manchester bomber a couple of years ago despite him being on their radar as a terror threat?

https://www.reuters.com/article/us-climate-change-britain-protests/london-police-arrest-21-climate-change-protesters-as-mass-action-starts-idUSKBN1WM0QA?feedType=RSS&feedName=worldNews