All these things should be addressed and corrected, but to call men second class citizens based on their gender is absolutely ridiculous.
Modern use of second class citizens is generally ridiculous, but words do change meaning over time.
When the women around you treat you as a potential child molester and are vary about your every move simply because of your gender, you don't think that counts as being a second class citizen in those environments? Of course it does! In child care men are absolutely discriminated against and treated as lesser or evil, as just the stand in for the real parent: the mother.