Whoever filmed and then uploaded that video has about 3 brain cells. Don't upload something like that online and then be surprised when you get a massive backlash. Whilst I do think what they did was horrendous and that they should suffer the consequences of their actions, even if just for pure stupidity, getting Scotland Yard, the prime minister etc involved is a bit of an overreaction. There is a huge amount of crime, particularly knife attacks, that are happening in London right now. My own suburban, middle class area has been hit with a wave of crime recently as well. I'd much rather the government did something to tackle those situations, the actual, physical acts of violent crime, than use resources for this.