This question kind of reeks of the non-American who consumes so much American media that they think their place of origin doesn't have the same characteristics like mostly men out and about at 4am operating the third shift or wandering home drunk.

And I'm not too sure men at work, regardless of race, rank very high on the scale of people you're scared to run into in the early morning, even in your place of origin.

That the people loading and unloading trucks at 4 in the morning are white? How would they even know?

I'm pretty confident that the people who load and unload trucks are mostly men regardless of what time they do it or what country they're in.