Who is Larry Klayman?

I first remember hearing Larry Klayman in this youtube video from a Washington rally.

“I call upon all of you to wage a second American nonviolent revolution, to use civil disobedience, and to demand that this president leave town, to get up, to put the Quran down, to get up off his knees, and to figuratively come out with his hands up."

Now, I posted yesterday about Klayman "killing Americans".  Historically the Declaration of Independence was a just war document and our Founders knew they would have to shed their fellow citizens' blood.  However, everything that I have found about Klayman, has him advocating for a nonviolent revolution.  Perhaps that is what he meant by this.

"For if these grievances are not satisfied in short order, not only will the people call for the resignation of President Obama and Republican leaders like House Speaker John Boehner and Senate Minority Leader Mitch McConnell, but, if this does not occur, we will consider alternative legal courses of action – as did our Founding Fathers with the divine guidance of our Lord."