The right to protest went when they created the law that made it illegal to protest outside parliament.
I never understood why people were ****ting bricks over this. Who cares? Due to it being the center of British politics, I can totally see why they have done it. All it'd have taken is one small bomb to go off there and the terrorists would use it to say "see, not even one of the most secure places in Britain can escape" - striking fear into people.
And why did u go to this protest if you don't like not being able to move? You have SEEN a protest before right?!
People were still allowed to walk past the houses of parliament as normal, just not protest, so someone could still have blown them up. It had nothing to do with terrorism. Though banning something because a terrorist attack could occur is horrendously bad law making anyway.