MLS - Movimento Liberal Social is rated 3 out of 5 in the category political organization. Read and write reviews about MLS - Movimento Liberal Social. The Liberal Social Movement (or MLS for short) was founded in 2005 and has as objective to promote social liberalism in Portugal. The movement is a platform of individuals who believe that the old left/right dogma make little sense today, and that it is possible to have a different and constructive type of politics in Portugal. MLS is ideologically close to the European Liberal Democrats (the third biggest political force in the European Parliament) who currently do not have a single representation in Portugal.