Definition - What does Equal Protection mean?
Equal protection refers to the right guaranteed in the United States Constitution of equal legal treatment as others who find themselves in the same situation. If a law discriminates between people, then the government must have a solid reason for doing so.
Justipedia explains Equal Protection
If a law discriminates on the bases of gender, race, or some other trait, which has historically been associated with discriminatory treatment, can only be constitutional if the reason behind this discrimination is very compelling.