Almost a week after a Ghanaian family was caught up in an altercation in a small German town, hundreds of people formed a human chain as they called for tolerance and denounced racism. Police said around 460 people gathered on Thursday evening in Grevesmühlen, a northern town of about 10,500 residents. They were linked by coloured ribbons as they stood in the Ploggenseering housing estate, where the incident occurred on June 14. Grevesmühlen’s mayor Lars Prahler and the state culture minister for Mecklenburg-Vorpommern, Bettina Martin, were in attendance at the event. According to the police, …