SKy news has just reported that David Cameron wants to extinguish all extremist parties! What he really means is that he want to extinguish all legitimate opposition. He has yet to define what he means by 'extremist' but I suppose he is turning his attention in particular on UKIP and the BNP who are currently the last vestige of legitimate opposition in the country.
So in the interest of fairness I went back to YouTube to find out some background to these 'extremists' who he is targetting and I found one. I urge you to listen to her and then make up your own mind.