Another spree killing adds to mounting pressure for gun reform

>>> at around 9:30 this morning, officials in mohawk, three hours north of new york city responds to a fire. they found this two-story home engulfed in flames. the individual who owns the house was not around. he drove to a barbershop, armed with a gun. he killed two customers inside the barbershop and killed two more. he left the barbershop, his house on fire and went to an oil change shop, gaffy's oil lube. he entered with a shotgun and started firing. when the smoke cleared, two more people were dead. after shooting up the lube, he holed up in this building. he left his car parked outside. when police officers discovered it, he started shooting at them. this is the man that police believe went on that shooting spree . he's described at a loner. police remain in a stand off with that suspect who is still holed up in that building. this multiple shooting happened a short distance from another mass shooting in the town of webster. that was christmas eve . a 62-year-old gunman set fire to his house in webster and ambushed the firefighters who arrived on scene. he killed two and injured four others. yesterday, one of the firefighters injured in the shooting testified by a congressional gun violence forum in washington . today in washington , moms demand action for gun sense in america descended on capitol hill to add their voices. there's political pressure for congress to act on guns. all this pressure coming from proreform groups and victims of gun violence . there's continuing incidence every day of shootings in this country. new york is just the latest. joe from "the new york times" does something he calls the day in gun violence . a woman in florida shot and killed her ex-boyfriend who she happened to run into at a post office . a 14-year-old boy upset over being grounded pulled out a revolver. he emptied the chambers. in oregon, a convicted felon gunned down his grandparents. they threw him a welcome home party to celebrate his release from prison. he shot and killed them after the party. listen to this part, detectives learned from a search of computer data , he researched gun shows in washington and nevada before or just after they were killed. at some gun shows, some sellers are not required to conduct background checks or sale records as gun shops do. the loophole, not requiring a background check is what congress has its sights on. a bill to require universal background checks . it's headed to a full vote in the senate. that bill, importantly, didn't get one vote from republicans on the committee. it passed with only democratic support. there's news tonight there may be a political breakthrough coming. nbc news is reporting tonight the nra, which long stood in the way of universal background checks will not oppose them as long as private dealers are not mandated to maintain records of the checks. they balking at that demand but the fact the nra is giving ground on the background check issue, that could be a very big deal . that is the first glimmer of something happening on this issue as a result of the days and weeks and months of mounting political pressure . as we saw, real world pressure as well. this story that cannot move appears to be moving as well tonight. stay tuned. it's time for "the last word request lawrence o'donnell. thanks for being with us.