In case anyone is thinking "Oh surely Lenin wouldn't include people who weren't marxists in this" btw

Prior to the downfall of tsarism, the Russian revolutionary Social-Democrats made repeated use of the services of the bourgeois liberals, i.e., they concluded numerous practical compromises with the latter. In 1901–02, even prior to the appearance of Bolshevism, the old editorial board of Iskra (consisting of Plekhanov, Axelrod, Zasulich, Martov, Potresov and myself) concluded (not for long, it is true) a formal political alliance with Struve, the political leader of bourgeois liberalism, while at the same time being able to wage an unremitting and most merciless ideological and political struggle against bourgeois liberalism and against the slightest manifestation of its influence in the working-class movement.