What protects the right to make views known by petition letters lobbying picketing or marching?

The right to express views through petitioning, lobbying, picketing, or marching is protected by the First Amendment of the United States Constitution. This amendment guarantees the freedoms of speech, assembly, and the right to petition the government for redress of grievances. These protections ensure that individuals can collectively express opinions and advocate for change without fear of government retaliation.