No, they don't target teachers.

Generally in European countries they target people who are alone at night or people who are dressed or acting strange.

In countries of different race, such as East Asia, foreigners are targeted because they are thought of to be all very rich, and ussually it is just petty thieves or pickpockets, not muggers or killers. They are not targeted because they are ESL teachers.

In North Africa and the Middle East, foreigners are targeted because of religous or political conflict, not because they are teachers!