By Lucinda ElliottMONTEVIDEO (Reuters) - In Uruguay's cities and towns, paintings of white daisies, each with a missing petal, have appeared on walls and at windows in recent weeks, in memory of the people who went missing during the country's military dictatorship that began 50 years ago. Thousands in the small South American country are set to take to the streets on Saturday in a "March of Silence" to remember those who were forcibly disappeared by the state, both in Uruguay and in neighboring Argentina, during a wave of military rule in the region. However, in order to maintain the high level of discourse we’ve all come to value and expect, please keep the following criteria in mind:  Are you sure you want to block %USER_NAME%?Block List