What did karl marx and max weber both uncover as a result to their sociological studies?

Karl marx and max weber have an objective. it is the value free sociology. here there is an issue regarding to sociological research whether or not researchers are or can be objective. they focuses most of their attention on macro issues particularly on the structure of the capitalist society.

from the conditions of the working class in england by friedrich engels,the main idea is :

manchester's leaders hoped to oppress its working class to benefit factory owners.