Multiple rallies are planned for this weekend in the nation's capital.
On the same day, at the same spot where Martin Luther King spoke 47 years ago, conservative talk radio host Glenn Beck will lead a rally Saturday honoring U.S. troops.
Kevin Kroney of Gridley, Illinois said, "We're here to restore honor and faith and charity and help freedom be preserved."
Matt Kibbe of Freedom Works said, "I think it's a celebration of Martin Luther King's legacy."
But critics question Beck's motives…a man who's called President Obama racist, drawing Tea Partiers and Sarah Palin, on the anniversary of the nation's most famous civil rights speech.
Harry Johnson of the MLK National Memorial said, "Why are you doing it on this day? Is it to get your word out, or are you trying to mock somebody?"
Others call it a publicity stunt.
Political Analyst Stu Rothenberg said, "Part of what they do is to get people angry, and there into confrontation. It's the nature of their business."
Around the same time, Reverend Al Sharpton will lead a march that ends nearby at the King Memorial site. Supporters say there's no conflict.
Melech Thomas of Christian Brothers United at Howard University said, "If this were a country where anybody who had a dissent against popular opinion was not allowed to express that dissent, then that wouldn't be the American dream."
Preparations are underway at the National Mall and police say they're prepared.