In Iron Man, the Stark Industries logo bears a strong resemblance to the Lockheed Martin logo, a real life arms manufacturer that's caught flak for it's weapons being used overseas recently.

Anthony Stark (Earth-616), Marvel Database

Stark Industries, Ultimate Pop Culture Wiki

Stark Industries, Marvel Cinematic Universe Wiki

What specific weapons/firearms did Stark Industries manufacture? - Quora

Anthony Stark (Earth-616), Marvel Database

Stark Industries, Ultimate Pop Culture Wiki

What specific weapons/firearms did Stark Industries manufacture? - Quora

Stark Industries, Marvel Cinematic Universe Wiki

Iron Man: Is Stark Industries Actually an Evil Corporation Without Accountability?