By , BANGKOK (Reuters) - Thai authorities said on Monday they were considering charges against leaders of mass protests that called for reforms to the monarchy as police seized a symbolic plaque that declared Thailand belonged to the people and not the king.Tens of thousands of people joined the protest at the weekend which cheered the demands to curb the powers of the monarchy of King Maha Vajiralongkorn - a revered institution according to the constitution.“Leaders used inappropriate words about the institution and we will take full action against them,” police spokesman Piya Uthayo told...…By , BANGKOK (Reuters) - Thai authorities said on Monday they were considering charges against leaders of mass protests that called for reforms to the monarchy as police seized a symbolic plaque that declared Thailand belonged to the people and not the king.Tens of thousands of people joined the protest at the weekend which cheered the demands to curb the powers of the monarchy of King Maha Vajiralongkorn - a revered institution according to the constitution.“Leaders used inappropriate words about the institution and we will take full action against them,” police spokesman Piya Uthayo told...WW…