"person" radical in Chinese characters (Kangxi radical 9)
亻
=
丿
+
丨
:
Mnemonic symbol: Rosa Luxemburg. She's quite radical, and her name starts with "r", just like "ren2". Also, 亻appears at the left-hand side of characters, and Rosa is a leftist as well.
Robinson Crusoe (r) and Rosa Luxemburg (亻) are having their favorite snacks in the encampment's kitchen: Rosa is eating a banana (丿) and Robinson is eating a dinosaur bone (丨).
to stop / to block / (computing) (coll.) slow / (loanword) card / CL:張|张[zhang1],片[pian4] / truck (from "car") / calorie (abbr. for 卡路里[ka3 lu4 li3]) / cassette
卡
=
上
+
卜
:
Karl Marx (k) wants to destroy capitalism by crushing credit cards (卡) with a voodoo staff (卜) and by stomping on (上) them in the ashram (a3).