Yoko Ono has never been shy about sharing her political thoughts.  She held "Bed-ins" with John Lennon to promote world peace and to show their opposition to the Vietnam War.  Since then, she's participated in various political causes.

Her famous Beatle husband John Lennon was killed in 1980 by Mark David Chapman.  Chapman used a .38 special revolver.

Ono is clearly still affected by the death of her husband 33 years ago.  Now, she's decided to comment on the current gun debate with the following tweet.  Those are Lennon's blood stained glasses.