The continued portrayal of Juan II of Castile’s privado and royal favourite, Álvaro
de Luna, as a tyrant, the record of the social expansion of this portrayal throughout
his time in office and the fact that the main reason for his execution refers precisely
to this argument are historic circumstances
that offer the chance to explore the
shaping of public opinion, its chronological development, social scope and political
usefulness, within the possibilities and limitations of the resources available.