After a Berlin man allegedly posted a photo of a drowned Syrian child to Facebook with the message "we are not mourning but celebrating it," German police raided his home today, seizing a computer and two cellphones, the AP reports. The man is now facing up to three years in prison for "defaming the memory of the deceased and incitement to hatred." The investigation into the Facebook post is part of Germany's crackdown on extremists stoking hatred of migrants on social media. Hundreds of migrants began arriving in Germany by train today. Earlier this week, the photo of 3-year-old Aylan Kurdi, who drowned off the coast of Turkey while fleeing his home country, drew worldwide attention to the migrant crisis. (More migrants stories.)