The 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, or used in a red bloc. 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 but it was first used as a flag of defiance. The red flag gained its modern political meaning in the 1871 French Revolution. After the October Revolution, the Soviet government adopted the red flag with a superimposed hammer and sickle as its national flag. Since the October Revolution, various socialist states and movements have used the red flag.