A man who identified himself as the leader of a notorious Haitian gang threatened police on Thursday that he will kill 17 abducted missionaries—mostly Americans—if he doesn’t receive a $1 million ransom per hostage. “I swear by thunder that if I don’t get what I’m asking for, I will put a bullet in the heads of these Americans,” said Wilson Joseph, the suspected leader of the gang dubbed “400 Mawozo,” according to a video that was shared on social media. Haitian Justice Minister Liszt Quitel said earlier this week that the gang demanded a total of $17 million in order to set free the 17 captives—seven women, five men, five children, all U.S. citizens except one Canadian. The group of missionaries were on their way home from building an orphanage when the gang abducted them, Ohio-based Christian Aid Ministries said in a message. The ages of the kidnapped children reportedly …