What was the main purpose of the march on washington, d. c. in 1963?

The march on Washington was to show the government that this wasn't just an issue in the South but everywhere and it affected everyone. It was to make a stand against injustice

So on the day of August 28 1963 , more than 200,000 demonstrators took part of the March on Washington for Jobs and also Freedom in the nation's capital. The march was successful in pressuring the administration of John F. Kennedy to initiate a strong federal civil rights bill in Congress.