Communist symbolism - Wikipedia
https://en.wikipedia.org/wiki/Communist_symbolismThe red flag is often seen in combination with other communist symbols and party names. The flag is used at various communist and socialist rallies like May Day. The flag, being a symbol of socialism itself, is also commonly associated with non-communist variants of socialism. The red flag has had multiple meanings in history. It is associated with courage, sacrifice, blood and war in general, but it was first used as a flag of defiance. The red flag gained its modern ass…