Hugh Hefner, publisher and owner of Playboy Magazine, and his girlfriend Barbara Benton, surrounded by Bunny Girls at the Playboy Club in London, on Sept.
Hugh Hefner, publisher and owner of Playboy Magazine, and his girlfriend Barbara Benton, surrounded by Bunny Girls at the Playboy Club in London, on Sept. 5, 1969. AP PHOTO

Late Wednesday night, Playboy magazine founder and "The Girls Next Door" star Hugh Hefner died at age 91. Once the news of his death broke, many people took to Twitter to thank Hefner for his work, his deeds (did you know he helped save the Hollywood sign?), his advocacy (for both civil and gay rights) and to send their condolences to the Playboy magazine community and his wife.

"Hugh Hefner was a persistent advocate for free speech & equal rights. He will be missed." -- Funny Or Die (@funnyordie)

"I had a number of great conversations and with Hugh Hefner. Was such an interesting man. True legend. What an end of an era!" -- Rob Lowe (@RobLowe)

"RIP Hugh Hefner, an absolute original and the man who saved LA's most famous landmark, the Hollywood sign. From one mansion to another." -- Tanner Thomason (@TannerThomason)

"Hugh Hefner was a strong supporter of the civil rights movement. We shall never forget him. May he Rest In Peace. pic.twitter.com/oL3lKLZRQ5" -- Rev Jesse Jackson Sr (@RevJJackson)

"Any assessment of Hugh Hefner's life is incomplete without noting his free-speech and civil-rights advocacy. RIP." -- Matt Ford (@fordm)

"A reminder that Hugh Hefner was a supporter of gay rights all the way back in the 1950s: https://t.co/wBthrfKCuh -- Cam Newton (@CamBNewton)

"Hugh Hefner, a titan. honored to have worked for his magazine. RIP.


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" -- Michael Hafford (@michaelhafford)

"Sending love to the @playboy family and community. Hugh Hefner was an iconic man of our time. pic.twitter.com/DYaAxgKIzf -- Alyssa Julya Smith (@IamAlyssaSmith)

"Wow...just read the news. Rest In Peace Hugh Hefner. Your legacy and soul shall live on!" -- Charlie Puth (@charlieputh)

"Life is too short to be living someone else's dream" -Hugh Hefner. RIP -- PAZ (@pazpaz)