Describe symbolism in You Can't Take It with You by Moss Hart

In the years before World War II, there was much suspicion about Germans and Russians. Mr. Kolenkhov symbolizes the lurking presence of these foreign powers. Ironically, Mr. Sycamore and Mr. DePinna are building fireworks, the most patriotic of American symbols, in the basement and are oblivious to the turmoil going on within the family.