Unsurprisingly, Google's Doodle for today honors Dr. Martin Luther King Jr. You can find the logo on the Google homepage, and clicking the logo does a quick search for "Martin Luther King Jr. Day". The search page shows a smaller version of the logo in the top left corner, and you can find a full-resolution version over at Google's blog post for today.
Said post reads:
Today's doodle honors Dr. Martin Luther King Jr., a Baptist minister, community activist, philosopher and humanitarian. His leadership of the American Civil Rights movement,Nobel Peace Prize for non-violent civil disobedience in the face of racial injustice, and eventual martyrdom for the cause, cements his place as a hero for peace and justice worldwide.
As per Google's Doodles site, the reach of today's logo is unsurprisingly restricted to the United States. Many of those residing in the US of A—especially grade school and college students, as well as government employees—are probably enjoying this federal holiday off, so you might actually have time to read about some of the logos Google has put up on its homepage on this day in the past.
WordPress.com