and abc's alex perez has more from the martin luther king jr. memorial this morning.lex, good morning to you. >> reporter: dan, good morning to you as well. this memorial first opened to the public in 2011. you think about it, since then we've covered stories like eric garner, tamir rice, this year, george floyd, breonna taylor and others. marchers saying those names represent what mlk spoke out on steps from here 57 years ago. [ crowd chanting ] >> reporter: they came from all over, thousands braving high heat, covid temperature checks, and wearing masks. retracing steps around the lincoln memorial where dr. martin luther king jr. once shared his dream with the country. criminal justice reform at the heart of friday's movement. >> demonstration without legislation will not lead to change. >> reporter: and then this. >> i just want to thank everybody who's been in support of getting justice for breonna taylor. >> i wish george were here to see this right now. >> reporter: family members of breonna taylor and george floyd emotional, taking the stage. jacob blake's fath