A crowd of happy people lit up joints in front of Berlin’s Brandenburg Gate just after midnight, to celebrate the beginning of Germany’s new law to decriminalize cannabis. Several hundred people gathered in an exuberant mood, some dancing to reggae music, a reporter from dpa witnessed at the scene. A metre-high cannabis leaf adorned a stage in front of the Berlin landmark, and cigarette lighters were held at the ready, waiting for the clock to tick over midnight. Shortly afterwards, a strong smell of cannabis wafted across the square. “We can finally show ourselves, we don’t have to hide any m…