During Abhisit’s tenure as prime minister, the United Front for Democracy Against Dictatorship (UDD), a group formed to protest the 2006 military coup, staged several protests calling for Abhisit to dissolve the government and hold new elections. The largest gatherings occurred in April 2009 and from March to May 2010, ultimately escalating into violent clashes between protestors and the military that left 91 people dead and more than 2,000 injured.