One has a leader with a swastika tattoo, one wants to rid his entire country of Muslims, another has a founder who suggested releasing the Ebola virus on migrants. This is the class of 2014, the parties set to enter the European Parliament as part of the Union's most eurosceptic, far right, anti-immigrant intake of all time.
...this year is the first time openly neo-Nazi parties will sit in Brussels as representatives of their nations."
European Elections: 9 Scariest Far-Right Parties Now In The European Parliament
In UK politics, UKIP is BNP lite, they are still racist, homophobic, and xenophobic, just they use more neutral language to attract the middle class. The BNP is for the poor and easily influenced, they have ties with Neo Nazis and are just as xenophobic, homophobic and racist as them.
In France, Le Pen's National Front is basically a nationalist party that believe French imperialism was justified. They hate America (see it as corrupting French society), love Russia, hate gays, and see the European Union as a group of nations out to destroy the French language and identity.
They are all dangerous, and from time to time look like they might get real power, but usually they go high one election then dive dramatically the next election.