On this day — September 20

Sixteen-year-old Greta Thunberg from Sweden leads the demonstration in New York City.

Tanzania.

resulting in 2,975 deaths, US$90 billion in damage, and a major humanitarian crisis.

don't tell" policy, allowing gay men and women to serve openly for the first time.

Pakistan, killing 54 people and injuring 266 others.

Louisiana, United States, in support of six black youths who had been convicted of assaulting a white classmate.

President George W. Bush declares a "war on terror".

killing two people.

embassy in Beirut, Lebanon, killing twenty-two people.