WEST PALM BEACH — Wellington residents woke up one morning earlier this month to find over 100 antisemitic flyers littering their lawns, an occurrence that became so common across South Florida last year, it was almost routine. The antisemitic incidents, which appeared to taper off over the past few months, are popping up again — but this time, if the perpetrators are caught, they will be treated as felons for acts like littering, trespassing and displaying images on buildings under a new Florida law designed specifically to thwart them. “It appeared as if these acts were over,” Palm Beach County State Attorney Dave Aronberg said at a news conference at the State Attorney’s Office in West Palm Beach on Tuesday, asking the public for help.