Publicly funded infrastructure and utilities within a Capitalist system isn't an example of Socialism. Socialism is an organization of society where public ownership is principle, ie at least over the large firms and key industries. The US Army is not "socialist," it's an arm of the state within a Capitalist system. Same with roads.

I get what you're trying to say, but I think this line of thinking backfires more often than it helps. Anti-socialists can easily point out that it's the broader system that needs to be viewed, not the discrete element.