Unity is a great thing and a great slogan. But what the workers’ cause needs is the unity of Marxists, not unity between Marxists, and opponents and distorters of Marxism.
Freedom in capitalist society always remains about the same as it was in ancient Greek republics: Freedom for slave owners.
When there is state there can be no freedom, but when there is freedom there will be no state.
Sometimes - history needs a push.
Can a nation be free if it oppresses other nations? It cannot.
Without revolutionary theory there can be no revolutionary movement.