What did Bismarck do to lessen the growing power of socialism?

Otto Von Bismarck passed legislation to curb the spread of socialist ideas and push socialist movements underground. These were the infamous "Anti-socialist laws".

He also introduced a set of social policies, such as unemployment insurance and health insurance programs, so workers and the masses would feel as though the current economic system did care for them and that arguing for an alternative (socialism) is unnecessary or wasn't worth the risk.