The 1st Amendment freedom that allowed all the supporters to gather together and protest peacefully in the March on Washington is the "Freedom of Assembly."
The Freedom of Assembly grants individuals the right to gather together for peaceful purposes, such as protests, demonstrations, or public meetings, without interference from the government. It allows people to come together to express their collective voice and exercise their right to free speech.
In the case of the March on Washington, thousands of protestors were able to assemble and share their message of the Civil Rights Movement because of this constitutional freedom. It enabled Dr. King and his supporters to peacefully advocate for equal rights and justice for African Americans, culminating in the iconic "I Have a Dream" speech.
Therefore, it was the Freedom of Assembly that allowed all these supporters to gather together and protest peacefully during the March on Washington.
