Final answer:
Black Lives Matter supporters are exercising their right to assemble which is protected by the First Amendment
Step-by-step explanation:
Black Lives Matter supporters gathering for a peaceful rally in the park are exercising their right to assemble which is protected by the First Amendment. This means that individuals have the freedom to come together in public spaces to express their viewpoints and engage in peaceful protests or demonstrations. In this case, the supporters are gathering to bring attention to issues of racial inequality and advocate for justice.
Learn more about First Amendment rights and freedom of assembly