economic crisis leads to racism.
Why do u thing this is happening?
History has shown that in cases of economic crisis, many people are pinning their hopes on far-right extremist parties, even neo-nazi groups. The most glaring example being Germany in 30's with the rise of Hitler's political "party" which costed million lives to the european population. But, it is happening in many other countries even right now.
My guess for this phenomenon is that people feel betrayed by their goverments and hold great anger against them, even if they are not racists they tend to vote for these parties because these parties promote strong feelings of nationalism and coiling. On the other hand, history has shown that these parties restrain certain freedoms and promote violence and hatred.
Finally, a conspirasy theory, that propably is bull**** but you never know, are these groups maybe led by the "system" in order to bring chaos and even create wars? maybe they feel that the economy might improve if a large part of the populations cease to exist.