Martin Luther King, Jr. Day Monday was recognized by celebrities who took to Twitter and Instagram to remember the civil rights leader.

Martin Luther King Jr Remembered

Among those who posted about MLK on the holiday were Scandal star Kerry Washington, reality TV’s Khloe Kardashian, WWE’s John Cena, Laverne Cox from Orange is the New Black and actor Mark Ruffalo.

Kerry Washington:

Khloé Kardashian

A photo posted by Khloé (@khloekardashian) on

Forest Whitaker:

Gabrielle Union:

A photo posted by Gabrielle Union (@gabunion) on

John Cena:

Laverne Cox:

Sanaa Latham:

A photo posted by Sanaa Lathan (@sanaalathan) on

Mark Ruffalo:

Cara Delevingne:

Uzo Aduba: