Today is Monday, April 4, the 95th day of 2016. There are 271 days left in the year.

Today’s birthdays: Former senator Richard Lugar, Republican of Indiana, is 84. Recording executive Clive Davis is 84. Author Kitty Kelley is 74. Actor Craig T. Nelson is 72. Actress Christine Lahti is 66. Writer-producer David E. Kelley is 60. Actor Hugo Weaving is 56. Actor David Cross is 52. Actor Robert Downey Jr. is 51. Singer Jill Scott is 44. Magician David Blaine is 43.

In 1818, Congress decided the US flag would consist of 13 stripes and 20 stars, with a new star to be added for every new state of the Union.

In 1841, President William Henry Harrison succumbed to pneumonia one month after his inaugural, becoming the first US chief executive to die in office.

In 1949, 12 nations, including the United States, signed the North Atlantic Treaty in Washington, D.C.

In 1968, civil rights leader Martin Luther King Jr., 39, was shot and killed while standing on a balcony of the Lorraine Motel in Memphis.

In 1975, Microsoft was founded by Bill Gates and Paul Allen in Albuquerque.

In 1991, Senator John Heinz and six other people, including two children, were killed when a helicopter collided with Heinz’s plane over a schoolyard in Merion, Pa.

Last year, in North Charleston, S.C., Walter Scott, a 50-year-old black motorist, was shot to death while running away from a traffic stop; Officer Michael Thomas Slager, seen in a video opening fire at Scott, has been charged with murder.