dna 1996 and slowly expanding list of convicted criminals who must submit samples. before this bill only 48% of the offenders were included. when petty larceny was added in 2004 it helped investigators identify people link to the 48 murders and 220 sexual assaults statewide. >> i can't think of a more important singular law enforcement tool than expanded dna collection from all convicted offenders. >> reporter: the point is violent offenders don't just commit violent crimes. when they're caught and convicted of misdemeanors their dna will be collected and could link them too much more serious previously unsolved offenses but critics say state crime labs are not equipped to handle the bigger load. new york civil liberties union says life is not "c.s.i" episode. a massive expansion much new york's dna data bank without adequate saved guards will