United States President Joe Biden has said that the US should ban assault-style weapons and high-capacity magazines to tackle the carnage of gun violence. The US President spoke after a string of mass shootings in the country.<br />''<br />''In a speech to the nation from the White House, Mr Biden said, too many everyday places in America had become killing fields.<br />''<br />''The US President said, there is need to ban assault weapons and high-capacity magazines. He further said, if Congress cannot outlaw such weapons, it should seek to raise the age to buy them from 18 to 21.<br />''<br />''Mr. Biden also called for expanding federal background checks and nationwide red flag laws, which allow law enforcement to remove weapons from anyone deemed dangerous.<br />''<br />''The latest mass shooting on Wednesday in Tulsa, Oklahoma, leaving four dead, follows a massacre of 19 students and two teachers at an elementary school in Uvalde, Texas, as well as an apparently racially-motivated attack at a grocery store in Buffalo, New York, leaving 10 people dead. <br />