He'll serve 4, come out and the fellow knuckleheads in his local will think he's a hero. If someone, genuinely, and I do mean genuinely, feels that they have been denied opportunities because of immigration policy, or if they think immigration policy is too generous, then it's their right as a citizen of a free Country to say their piece, take their stand in whatever peaceful way they want to. However ... once you decide to try and burn a building down or drag some poor sod out of his car and give him a shoeing- you're a d*ck and a criminal.
I recognise that there is no viable option to vote for and change your life via government so stand up for yourself and work your way out of your situation. Take personal responsibility rather than setting fire to a building full of randomers. That's just arson and you're getting time.