The Communists disdain to conceal their views and aims. They openly declare that their ends can be attained only by the forcible overthrow of all existing social conditions. Let the ruling classes tremble at a Communistic revolution. The proletarians have nothing to lose but their chains. They have a world to win. Working Men of All Countries, Unite! –The Communist Manifesto, Karl Marx and Friedrich Engels, 1848 What action do the authors suggest that workers should take to improve their conditions?

win reforms through peaceful strikes and protests
hide their views from the public, and plot in secret
band together and revolt against their governments
run for office at the local and national levels