Black bloc is a type of protest where people wear black clothing, usually outfits like masks and all-black clothing so they look alike. It is usually used to stand up for ideas or to make a statement. During a black bloc protest, people march together and might do things like chant slogans, yell loudly, or even break things. They are also known for lightening the mood with music and dancing. Some people think black bloc is a way to make powerful statements without being violent.