Final answer:
Martin Luther King Jr. viewed certain types of extremism as necessary for social change, specifically those rooted in love and justice. He differentiated between negative extremism, which is violent and unproductive, and positive, creative extremism through nonviolent action that can achieve meaningful progress.
Step-by-step explanation:
Dr. Martin Luther King Jr. believed that extremists could play a positive role in society if they are extremists for love and justice rather than for hate or injustice. In the 'Letter from Birmingham Jail', King points out that throughout history, influential figures have been labeled as extremists for their unwavering commitment to causes they believed were morally right, such as equality, love, and justice. He argues that the world needs 'creative extremists' to drive social change and progress, highlighting the necessity for action against societal issues like segregation and racial discrimination.
King does not associate extremism with violence or ineffectiveness; instead, he suggests that the nature of one's extremism—whether it is rooted in love and justice or hate and injustice—is what defines its value and impact. He stresses that nonviolent civil disobedience is a form of creative extremism that can lead to positive change, which aligns with his philosophy of peaceful resistance.