LONDON (AP) — Britain’s interior minister accused activists of hijacking a tragedy to stir up violence after police were attacked at a protest over the death of a teenager who was handcuffed as he lay dying while his killer stood nearby.

Police were pelted with chairs, cans, rocks and flares late Tuesday by some of the hundreds who attended a protest in the southern English coast city of Southampton, where Henry Nowak was killed in December. Two people were arrested and 11 officers and a police dog were injured, police said.