A question like this cannot be answered simply. However, in short, apart from communism, all other ideas of Nationalism, Democracy and Feminism have achieved some degree of success in the 20th Century.
After World War I and especially World War II, we saw a surge in nationalism among colonial possessions all over the world. Most of these countries became democratic republics but many also saw dictatorships and kingship.
Universal suffrage and feminism also took a hold after World War II where women were given more social freedoms and the movement is still continuing to this day.
In order to prevent crashes, pedestrians must walk in the cross walk, make them selves known and seen to people driving, and must abide by the rules. This relates to BLM in a few ways. People of color must make them selves known & always have their body visable, in order to stay safe.
