What different beliefs did Martin Luther King, Jr. and Malcolm X have in general and regarding role models?

I think that identification of both leaders' beliefs of
role models and their overall thinking reflects thought processes in change.  Both
thinkers possessed patterns of thinking that were in evolution or change, cut down
prematurely by the bullets of assassins.  Indeed, Dr. King did advocate nonviolence. 
Yet, as his movement progressed to addressing Northern racism that was more covert in
its operation, King was moving towards a louder demand of change to raise awareness to
the covert nature of the enemy.  In the Southern United States, racism was more overt
with prejudice being able to be clearly identified through sight and perception.  The
North featured a different brand of racism that was hidden, more surreptitious, but just
as brutal in forcing people of color, specifically African- Americans, to languish in
conditions that sought to weaken the will and resolve for change.  His calls for social
justice became louder with this reality coupled to the escalation of the conflict in
Vietnam, where Black men were being drafted for a war in which they had little, if any,
say as to how it should be fought, if fought at all.  While King never left his stance
of non-violence, he began to understand that his calls for peace were being manipulated
into silence.  The rhetoric and demands in his speeches and actions towards the end of
his life would demonstrate a more defiant tone in his
thinking.

Malcolm X, as already been identified, was moving
towards a more coherent vision of how Islam and its followers have to speak out against
injustice.  At the same time, though, he was willing to speak of a Pan- African vision
that articulated the condition of people of color worldwide.  In broadening his struggle
to involve more people, Malcolm X was speaking to a condition of power, who was in its
position, and how it was being distributed.  Similar to King, while the calls were
different, the defiance and demands for social justice were just as loud and resonated
through the halls of the Status Quo with the same reverberating
tremors.