Ten illegal immigrant members from El Salvador or Honduras, of the notorious MS-13 gang — including one who was previously deported — were indicted Thursday in a wave of Long Island violence that included the slaughter of two teenage girls along with crimes of racketeering and multiple counts of conspiracy to murder.  Best friends Nisa Mickens, 15, and Kayla Cuevas, 16, were beaten with baseball bats and hacked with a machete during an attack that began when gang members spotted them walking…
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