Because Spaniards already had “communidad.” If your neighborhood isn’t intersecting and solidifying everywhere, it won’t be able to organize against the state’s power to oppress, divide, and conquer. Your organization needs to be against the state in the first place, for the zeitgeist to overwhelm state sanctioned power.
Even in Italy, the State always arms & organizes fascists.
Do you think we can “grassroots” our means to counter state power?
OP, who do you think armed and organized Nazis?
If you’re honestly asking db0, the answer is blatant.