It's intervention by the state. The mafia does all those things but it's not socialism. Here's Murray Rothbard's definition of socialism:

When government ownership or control extends to the entire productive system, then the economic system is called socialism. Socialism, in short, is the violent abolition of the market, the compulsory monopolization of the entire productive sphere by the State. There are two and only two ways that any economy can be organized. One is by freedom and voluntary choice—the way of the market. The other is by force and dictation—the way of the State.