Over the the past 10 years in particular, we've seen a significant shift in the way that people have grappled with traditional ideas of gender in favor of expressions that make sense to them.
While it was much more common in decades past to pass on traditional concepts without questioning why they were told they needed to or who set them in the first place, both the narrow definitions of gender and how members of those genders are "supposed" to express themselves are now being re-examined.
And what many have found is that some old ways of looking at the issue both imposes unneeded restrictions and runs counter-productive to their efforts to lead happy, healthy lives.
Broadly speaking, it's that emerging attitude that has led some male teachers throughout Spain to wear skirts to class in solidarity with a now-prominent student.