video via Roland Martin (2012) As the world focuses on the trial involving George Zimmerman (a case which ended with unarmed 17 year old Trayvon Martin killed in the process), we should not forget about the case of a Florida mother named Marissa Alexander. Here are some simple things to know: Marissa claimed that she was being abused by her husband. Marissa had a baby 9 days before the incident. Marissa fired a warning shot that hit no one. No one was injured. Marissa’s gun was licensed and registered to her. Marissa was sentenced to 20 years in prison.