WASHINGTON (WUSA9) -- It is a huge week for gun control, and it kicked off today with one of the most emotional speeches of President Obama's career.

He walked in to the University of Hartford to a rock star's applause, and several times, he had the crowd on their feet.

The President spoke for nearly a half hour, and it was this phrase that met the most thunderous applause, "This is not about politics. This is about all the families that are here that have been torn apart by gun violence. It's about them and all the families going forward so we can prevent this from happening again. That's what it's about."

The President was introduced by Nicole Hockley, mom of Dylan, one of the 20 first graders at Sandy Hook Elementary School gunned down on December 14th, 2012.

She talked about how she feels, 4 months later, "Hollow and empty from the sorrow of losing my precious boy. And there's still many days when I feel like that. Sometimes the waves of sadness are so great that they threaten to drown me, I stand before you now and ask you to stand with me."

It was a speech to garner support for gun control legislation from Congress. They will take on the emotional subject starting this week.

On the table:

-Expanded background checks, requiring sellers at gun shows to perform them on all buyers, and keep those records like licensed gun dealers do now,
-Restricting high capacity magazines, and
-Banning military style rifles.

Josh Horowitz from the Coalition to Stop Gun Violence weighed in, "I think the basic part of any solid gun violence prevention plan is background checks....states that have universal background checks have far less gun trafficking than states that don't."

Chris Plante, Conservative Talk Show Host on WMAL says an assault weapon ban won't change a thing, "The number of people killed in murders, using a rifle in the United States of America is 0.01 percent, 0.01 percent. You can ban them all but it won't move the needle."

This is a debate that will no doubt continue all week as Congress begins to address gun control in the nation. Also in D.C., families of the Sandy Hook tragedy. Several flew here with President Obama on Air Force One.

Another group to watch: a small but vocal group of conservative Senators who are threatening to filibuster any bill they say infringes on the 2nd amendment.

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