This would be false. His letter basically is about nonviolent resistance. It doesn't really have anything to do with President Kennedy, and it's talking about unjust laws, and to take direct action instead of using violence.
I hope this helps! ~Mia
I'm not sure if you made a typo or not but in the current context I can only see negligible being relevant.
Answer:
The three beliefs that made Lutherans different from Catholics are, Lutherans believed that salvation could be attained by faith alone, Lutherans believed the Bible contained the only truth, not the Church, and Lutherans allowed members of the clergy to marry.
Not sure i would like to know the answer as well