Newtown gun control advocates gathered Monday in front of National Shooting Sports Foundation headquarters and called on the gun industry to change its marketing practices, reigniting a polarizing debate the day before the annual firearm industry trade show opens in Las Vegas.

The activists called on Newtown-based NSSF to stop marketing military-style assault weapons, to stop marketing guns to children and to support stronger background check requirements on gun sales, a measure that failed to gain passage in the U.S. Senate last April.

They held a press conference across the street from the old, white Colonial-style building that houses the gun industry’s trade association – just a few miles from Sandy Hook Elementary School where 20 first-graders and six adults were shot and killed in Dec. 2012.

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