When 20-year-old Kathrine Switzer bucked the Boston Marathon's rules in order to compete, a man tried to physically remove her from the race.
Matt Brown is a Parapalegic. Lucas Carr is an Army Ranger and firefighter. They've been running the Boston Marathon together for years.
Roberta "Bobbi" Gibb had to sneak onto the Boston Marathon course in 1966, becoming the first woman to run the historic race. "But how can we prove that we can do something if we are not allowed to do it?" she says today.
Alexander Ciccolo has been arrested and charged on suspicion of planning a terrorist attack, in methods echoing those used by the Boston Marathon bombers in 2013.
Convicted Boston bomber is expected to be formally sentenced to death in a courtroom full of his victims and their families.
The 21-year-old and his elder brother Tamerlan Tsarnaev planted bombs at the Boston Marathon on April 15, 2013, which ultimately killed three people and injured as many 264.
An appeal is likely, but the defense's argument that the 21-year-old was influenced by his older brother and expressed remorse for the 2013 attack did not sway the 12-member jury.
Over the course of several days, 12 jurors will fill out a 24-page questionnaire that helps them determine whether Dzhokhar Tsarnaev lives or dies.
Reporters don't seem to be sure whether or not the convicted 21-year-old shed a single tear, but his life could depend on it.