The president was interrupted by the father of Parkland victim 17-year-old Joaquin Oliver who yelled: "We have to do more than that"
Thousands gathered on the National Mall as March For Our Lives held a rally calling for solutions to escalating gun violence
"The fact that a majority of Senate Republicans don't want any of these proposals even to be debated- I find unconscionable"
Several other children were injured in the attack, including a 10-year-old who remained in critical condition in a Texas hospital
Hogg, who co-founded the student and young person led March for Our Lives movement placed the blame on both political parties for the carnage
"I will just say to the people of Uvalde: Please know that we grieve with you. And we are praying for you, and we stand with...
The victims were students at the Robb Elementary School in Uvalde, Texas