January 15, 2015: In Boston: “Black Lives Matter” protesters shut down Interstate 93 in Medford and Milton during morning commute.

March 25, 2015: Federal Reserve Bank of Boston releases its “Color of Wealth” report showing gigantic disparity in wealth between Blacks and whites.

May 15, 2015: Jurors sentence Dzhokhar Tsarnaev to death in the 2013 bombings at the finish line of the Boston Marathon.

June 17, 2015: Dylan Roof, a young white man, guns down Black worshippers engaged in Bible study at Mother Emanuel AME Church in Charleston, S.C.

June 26, 2015: In Obergefell v. Hodges, Supreme Court recognizes the constitutional right of same-sex couples to marry.

July 14, 2015: World powers reach deal to constrain Iran’s capacity to enrich uranium to make nuclear weapons.

December 12, 2015: Almost every country adopts the world’s first accord on climate change at a United Nations conference in Paris.

January 18, 2016: In Boston: Two Black students at Boston Latin School, Meggie Noel and Kylie Webster- Cazeau, post a YouTube video accusing administrators of ignoring the school’s racist climate.

April 20, 2016: Harriet Tubman selected to appear on the $20 bill, becoming the first African American pictured on U.S. currency.

June 3, 2016: Former heavyweight boxing champion Muhammad Ali, a Black Muslim who resisted the draft during the Vietnam War, dies at 74.

November 8, 2016: Donald Trump is elected president over Hillary Clinton, the first female presidential nominee of a major party. In Massachusetts, voters legalize recreational marijuana and reject the expansion of charter schools.

November 25, 2016: Fidel Castro, leader of the Cuban revolution and his country’s leader for more than 50 years, dies at 90.

March 23, 2017: In Boston: Rachel Skerritt, a Black teacher and administrator, is named first headmaster of color at Boston Latin School.

August 11-12, 2017: White supremacists stage hostile protests in Charlottesville, Virginia against the removal of a statue of Confederate General Robert E. Lee, resulting in the death of one woman.

September 20, 2017: Hurricane Maria strikes Puerto Rico, killing almost 3,000 and knocking out the electric power grid.

October 15, 2017: A tweet from a white actress makes the hashtag #MeToo go viral following allegations of sexual abuse and harassment against movie producer Harvey Weinstein. A Black woman, Tarana Burke, created the hashtag in 2006.

April 26, 2018: Actor-comedian Bill Cosby is convicted in Pennsylvania of indecent assault against a woman.