That's so historically inaccurate I'm amazed it's got so many upvotes. Let's go through the SA case:

• the ANC's armed wing insignificant and largely ineffective throughout the struggle (Mandela himself acknowledged this, and that the MK was largely symbolic).
• MK sabotage campaigns never posed a genuine military threat to the apartheid state
• By the 1980s, most MK leadership was in exile, imprisoned, or neutralized

Apartheid was successfully brought down in SA mostly because of huge international economic sanctions and divestment, mass civil disobedience and labour strikes (read about the United Democratic Front's campaigns), and the moral delegitimisafiom of apartheid through Non-violent resistance.

Same with the US: people love to point at the Black Panthers, but they were systematically destroyed or marginalized (so ineffective besides vibes). The Civil Rights Movement succeeded precisely because it maintained non-violence even when met with brutal repression.

I maintain that anyone that encourages violence, especially online these days must be a glowie. Want to be radical and revolutionary? Stop paying your taxes lmao.