MLK led a civil rights movement that focused on nonviolent protest. He envisioned equality for all people. He is admirable because he changed the world with his 'i have a dream' speech and led it without any violence whatsoever. His protest is still remembered to this day because his speech made people start listening. We have him to thank (along with others) for the equality between races we have now.
the definition of logos (in apex) is: the logical part of communication, which includes the presentation of facts & statistics & how such information is organized