By DARIA LITVINOVA MOSCOW (AP) — Relatives wept and hugged as the nine people killed in a school shooting in the Russian city of Kazan were buried Wednesday, which was declared a day of mourning in the predominantly Muslim republic of Tatarstan. A huge pile of flowers grew at a makeshift memorial outside School No. 175 in the city 430 miles (700 kilometers) east of Moscow where the gunman opened fire