Here’s a look at some interesting events that took place on this day in history:

1943 – The hallucinogenic effects of LSD are discovered (More info)

1962 – Walter Cronkite takes over as the lead news anchor of the ‘CBS Evening News,’ going on to become “the most trusted man in America” (More info)

1963 – Dr. Martin Luther King, Jr. pens his “Letter from Birmingham Jail” while incarcerated there for protesting against segregation (More info)

1990 – Jack Kevorkian participates in his first assisted suicide (More info)

2007 – The deadliest spree shooting in modern American history occurs at Virginia Tech when a gunman kills 32 people and injures 23 more before committing suicide (More info)