This is a new mnemonic! Whenever you see a kanji whose onyomi is ZOKU, please use this radical as the keyword.
Ten bandits with spears took your money .
a bandit or rebel- not like a lone mugger, but a bunch of dudes hiding in the countryside outside of government control, all Robin Hood style
pirate (pirate DVDs go by the wonderful neologism of "海賊版DVD")