Here's a short story:

MONTGOMERY, Alabama (CNN) -- From the time he first emerged as a civil rights leader, the Rev. Martin Luther King Jr. lived with the threat of death, but he never wavered in his commitment to non-violence. 

Dr. Martin Luther King Jr. believed the cause they were fighting for was worth dying for. 

"Dr. King made it rather clear that the cause that we were fighting for was not only worth living for, but it was worth dying for, if need be," said Fred Gray, the lawyer who helped King lead the fight to desegregate city buses in Montgomery, Alabama, in 1956. 

A month after blacks began a bus boycott, a midnight caller warned King that he would be sorry he ever came to Montgomery. Three days later, his house was bombed. 

Angry blacks gathered outside King's home, but Gray said, "Once he found out his family was safe and secure, he simply went out, talked to the crowd, and told them to go home, and they went." 

King knew what could happen when he led demonstrations in Birmingham, Alabama, in 1963, facing fire hoses and police dogs in an effort to desegregate downtown businesses. 

Longtime aide Andrew Young said, "Going to Birmingham was to him the possibility of an imminent death." 

Another aide, the Rev. Wyatt Tee Walker, said when he kissed his own wife and children goodbye to go there, "I thought I would never see them again. I didn't think I would come out of Birmingham alive. I didn't think King would."  (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Where does the story focus?
Guess: Montgomery, Alabama

Question: What was the focus?
Guess: Martin Luther King Jr.

Question: Who was he?
Guess: a civil rights leader

Question: what was his aim?
Guess: civil rights

Question: Was he successful?
Guess: unknown

Question: Did he fear losing his life?
Guess: yes

Question: Was he ever at odds with authority?
Guess: yes

Question: Who ?
Guess: fire hoses and police dogs

Question: Were they injured?
Guess: unknown

Question: How many US States mentioned?
Guess: One

Question: Which decade was he mentioned being active in?
Guess: 1900's

Question: Who were his colleagues in civil rights?
Guess: Fred Gray

Question: What was his profession?
Guess: lawyer

Question: Did they work together on anything?
Guess: yes

Now answer the following question in the same format.

Question: What type of event did they participate in together?

the fight to desegregate city buses