PARIS—A French court on Wednesday convicted 11 of 13 people charged with harassing and threatening a teenager who harshly criticized Islam in online posts and ended up changing schools and receiving police protection to preserve her safety. The verdict came in a trial in Paris that was the first of its kind since France created a new court in January to prosecute online crimes, including harassment and discrimination. The court sentenced the defendants to suspended prison terms of four to six months and fined them about $1,770 each. “Social networks are the street. When you pass someone in the street, you don’t insult them, threaten them, make fun of them,” the presiding judge, Michel Humbert, said. “What you don’t do in the street, don’t do on social media.” The teen at the center of the landmark cyberbullying case, who has been identified publicly only by her first name, Mila, testified …