He took part in the 15-M Movement through ¡Democracia Real YA!. He also participated in the anti-eviction movement. Keen of the online alias "hackabogado", Moreno Yagüe, promoter of initiatives such as Democracia 4.0, and #Opeuribor. He has been (2012-2014) one of the lawyers hired by 15MpaRato movement, the citizen platform that uncovered the Bankia Case that brought Rodrigo Rato to trial. He has taken part in the X Party since its inception, he ran 6th in the party list for the 2014 European Parliament election in Spain. The party failed to obtain representation. Moreno Yagüe ran 2nd in the Podemos list for Seville vis-à-vis the 2015 Andalusian regional election, and, elected, became a member of the 10th term of the Parliament of Andalusia, where he served as 3rd Vice-President of the governing board of the legislature.