Martin luther king, jr. made a historical speech in 1963. which describes the event? select all that apply. - over 200,000 people of all ethnicities gathered at the jefferson memorial to hear him speak. - he challenged the imagination of his listeners by offering them hope in the language of "i have a dream". - the passion was so intense that police had to violently disperse the marchers. - the crowd heard this: "i have a dream that one day this nation will rise up and live out the true meaning of its creed: "we hold these truths to be self-evident, that all men are created equal." - martin luther king was assassinated at the end of his speech.