JERSEY CITY — Gov. Phil Murphy visited Jersey City Tuesday to announce that his administration is taking aim at gun-makers in an effort to lessen gun violence in New Jersey. But will pressure on Smith & Wesson from the state of New Jersey do anything to curb street violence in places like Jersey City, where four high school students were shot dead last year? Reaction is mixed, with praise for Murphy’s actions from Democratic officials and more muted support from local activists. Pamela Johnson is an anti-violence advocate who visited the Bethune community center on Martin Luther King Drive to...