When theory grips masses it becomes a social material force , a political material force

When theory grips the working class masses , it matters politically .

"The weapon of criticism cannot, of course, replace criticism of the weapon, material force must be overthrown by material force; but theory also becomes a material force as soon as it has gripped the masses. Theory is capable of gripping the masses as soon as it demonstrates ad hominem, and it demonstrates ad hominem as soon as it becomes radical. To be radical is to grasp the root of the matter. But, for man, the root is man himself. The evident proof of the radicalism of German theory, and hence of its practical energy, is that is proceeds from a resolute positive abolition of religion. The criticism of religion ends with the teaching that man is the highest essence for man – hence, with the categoric imperative to overthrow all relations in which man is a debased, enslaved, abandoned, despicable essence, relations which cannot be better described than by the cry of a Frenchman when it was planned to introduce a tax on dogs: Poor dogs! They want to treat you as human beings!"