The closing line of Marx and Engels' work represents the embodiment of the call to action. The demand to the Proletarians to accept and change the reality in which they are immersed, and not to be persuaded into passivity by false modes of consciousness is of critical importance to the notion of instigating revolutionary change in the ownership of the means of production. The quote reflects how Marx and Engels envision how change will happen. Only when the proletarians understand their condition as a broad one where unity and collectivity can yield a certain strength in numbers will change happen. Marx and Engels are quite pointed about the fact that it will not happen if the proletariat does not see their own state as a collectivized notion where unity and solidarity is possible and critical to change the status quo. The closing quote of the work confirms this.