Withholding your vote only puts gasoline on the fire.
Can you say this to a Palestinian-American or Latin American with a straight face? The Democratic Party is still complicit in genocide abroad and refuses to accept abolition of Trump's personal white supremacy army. Several Democrats are implicated in the Epstein Files and their colleagues are covering for them. If you don't think these are the appropriate lines in the sand to draw, then the line doesn't exist. The "lesser evil" rhetoric will justify anything.
...civil protest and mutual support networks
We should all be joining leftists organizations, anti-capitalist reading groups, mutual aid groups, workers unions, tenants unions, self-defense groups, community gardens, and real grassroots communities built on trust. Such communities will form the foundation for future protests, boycotts, workers strikes, renters strikes, and, if necessary, civil disobedience. That is the only way the American people can regain control at this point.