Protesters have gathered outside an Istanbul court in a rally for justice for Mehmet Ayvalitas.<br /><br />The 20-year-old was killed when a vehicle rammed into a group of demonstrators as they protested against an urban development plan for Gezi Park close to Taksim Square in the city.<br /><br />Seven people died during the protests with thousands injured.<br /><br />The victims mother Fadime said outside the court: “I will speak in front of a judge for the first time in my life, I am full of emotion. The emptiness he left is so big and it’s getting bigger. Nothing can take his place.”<br /><br />As the trial of the alleged driver got underway a number of protesters tried to force their way into the courthouse after members of Mehmet’s family were refused entry.<br /><br />Demonstrations against the Gezi Park construction plan spread across Turkey and became a collective call to keep Turkey secular and against the perceived authoritarianism of Prime Minister Recep Tayyip Erdogan.