That's because he has cameraphobia. And clearly has no clue why people get arrested for having knives.(They are illegal)
But yeah clearly because the UK has the strictest laws regarding weapons and because one innocent man was arrested the whole system is bad and we need to get rid of it.
Also he doesn't know what a police state is either.
Again, living in wonderland where innocent people are never arrested and mistakes never happen.
The fact that you think one innocent person being arrested means the whole system is corrupt proves your idiocy. No system will ever be perfect enough to protect everyone. This is not wonderland, Alice.
Also let's ignore the good these cameras have likely done speeding up investigations, stopping crime and lowering crime rates solely by existing.