Inauguration Day and Martin Luther King Jr. Day collide Monday in a rare occurrence. The big picture: Stock markets, banks, many schools and the U.S. Postal Service are closed for the federal holiday,

Every year we honor the legacy of Martin Luther King Jr. in January. Here's everything you need to know about the holiday.

Family and others carrying on Martin Luther King Jr.'s legacy of equality, justice and nonviolent protest want Americans to remember that Monday's holiday is really about helping others.