organized protests across this country in an army of activism everyday americans pushed for change at the state and federal levels. nbc news reports what a difference a decade makes for america s gun laws. killing sprees have become more frequent and public support for tougher firearm laws has grown the gun lobby on capitol hill has shown cracks. congress passed the first federal safety gun law 30 years in june to tighten background checks and offer grants for states to keep guns out of the hands of potentially dangerous people before they commit violence. on a state level 525 significant gun safety laws adopted in the decade since sandy hook according to a new report by the giffords law center to prevent gun violence. the books columbine and parkland, quote, gun safety wasn t buried in newton, connecticut. the modern movement was born that day.