"Revolutionary solidarity is, above all, a revolutionary practice. What this means is that it carries within itself the aims of revolution. For this reason, as anarchists, we cannot base solidarity on any authoritarian or economic foundations. It is not a matter of obligation, duty, or debt. No one owes anyone solidarity, regardless of what they have done or what they are going through. Rather the basis of solidarity is the recognition of one’s own struggle in that of others - in other words, complicity. This is of major importance. If solidarity is the recognition of my own struggle in the struggle of others, it is carried out in practice precisely through continuing that struggle, continuing to attack this social order, and doing so with a focus on what unites my struggle with that of others."
Revolutionary Solidarity (via combat—wombat)