What is a “pinko”?

After Don Cherry’s mostly incoherent and offensive “speech” yesterday, many are asking… “What is a pinko?”

According to Wikipedia:

Pinko is a derogatory term for a person regarded as sympathetic to communism, though not necessarily a Communist Party member. The term has its origins in the notion that pink is a lighter shade of red, the color associated with communism; thus pink could be thought of as a “lighter form of communism” promoted by supporters of socialism who weren’t, themselves, “card-carrying” communists.

And who (also according to Wikipedia) uses this term:

Common term to describe younger people among 80 year olds.

Now you know.