extremism, in a political party means, you will not compromise with anyone on any matter.

witness the failure to talk to recent supreme court nominee,

shutting down the government.if you don't get your way.

trying to get rid of obama care many, many times, instead of moving on.

the republican party is led by reactionaires, who try to shut down entitlements, or, and every program that's put forth by the president.

and that's just the tip of the iceberg,