Police are on pace to make 3,000 arrests this year for carrying a gun illegally, a record, but the people charged are less likely to be convicted.One in an occasional series, about Philadelphia’s unchecked gun violence.As Philadelphia’s gun violence has surged to unprecedented heights, two troubling trends have quietly kept building:Thousands more people are being arrested for carrying guns illegally. But their chances of being convicted in court have fallen by nearly a quarter.That conundrum now drives a debate between the Philadelphia Police Department and the District Attorney’s Office...…Police are on pace to make 3,000 arrests this year for carrying a gun illegally, a record, but the people charged are less likely to be convicted.One in an occasional series, about Philadelphia’s unchecked gun violence.As Philadelphia’s gun violence has surged to unprecedented heights, two troubling trends have quietly kept building:Thousands more people are being arrested for carrying guns illegally. But their chances of being convicted in court have fallen by nearly a quarter.That conundrum now drives a debate between the Philadelphia Police Department and the District Attorney’s Office...WW…