Members of a violent Brooklyn gang involved in the tragic shooting that paralyzed an innocent 11-year-old girl w​ere busted on drug and murder charges for crimes that ranged up and down the East Coast, authorities said Thursday.

Dozens of alleged crooks – including 12 members of the Gates Avenue Mafia – were indicted, Brooklyn District Attorney ​Ken Thompson announced, ​for crimes ranging from selling heroin and crack in Bedford-Stuyvesant and upstate New York to breaking their victims’ kneecaps with a hammer to smuggling guns up from South Carolina.

Members of the Gates Avenue Mafia were the target of Young Bosses member Kane Cooper when he fired 10 bullets and hit Taylonni Mazyick, 11, on May 31, 2013 – paralyzing her from the waist down.

“The shooting of Taylonni Mazyick started this whole investigation,” said Brooklyn District Attorney Ken Thompson.

“What we have here is gang violence in Brooklyn that started on Gates Avenue that almost took the life of a beautiful innocent young girl that wound its way up all the way upstate to Gloversville.”

The arrests also yielded 29 guns, big bags of drugs, and $24,000 in cash.

“All shootings matter to us in law-enforcement but when an 11-year-old innocent girl gets shot, it means a little more,” said NYPD deputy chief Kevin Catalina. “When this incident occurred we collectively got together with the DA and said we have to find a way to stop the violence.”

Authorities, court papers, and sources detailed a wide range of brutal crimes perpetrated by the arrested crooks.

GAM member Rasheen Behlin, 29, allegedly burst into the apartment belonging to a Gloversville customer and duct-taped the two men inside before using hammers to break their knees and ankles and then shooting one of the men in the face through a couch cushion, according to the Brooklyn DA’s office.

In addition to selling guns and drugs on the streets of Brooklyn, the gang members would carry cocaine to Gloversville – near Albany – twice a month on the bus because they could get $50 more per 8-ball than the $150 they got in Brooklyn, the DA’s office said.

These individuals associated with GAM also brought a man up from Baltimore to shoot some of the gang’s rivals, DA Thompson said at a press conference Thursday.

Two of the men arrested – Curtis Clark, 20, and Deshawn Tolbert, 20 – smuggled guns from South Carolina to New York and were caught with nine handguns, law-enforcement sources said.

GAM member Joseph Hutcherson, 20, was also indicted for murder for a recent shooting in Bedford-Stuyvesant.

DA Thompson said that of the 32 people indicted, 7 are still at large – many of whom are hiding in the South.