A police officer’s broad testimony about the Latin Kings is not enough to establish the group is a criminal street gang under state law, a divided Illinois Supreme Court ruled Friday.The 4-3 decision vacated Deontae X. Murray’s conviction for firearm possession by a street gang member, finding the state “violated the constitution because it shifted the burden to defendant to disprove an element of the offense,” Justice P. Scott Neville Jr. wrote on behalf of the majority.Justice Anne M. Burke joined …