I'm guessing the chant was a construct of their Marxist handlers, A.N.S.W.E.R.
P.S. I have an early primary for Congress in the 11th District of North Carolina, 2 May, less than a month away. visit my website in the tagline, and help however you can.
Congressman Billybob
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No, it's been around for a long time. UFW used it in the mid-60's, may predate that.