If you honestly think that social injustices or inequalities are only valid if enforced by systemic oppression then really you don’t actually give a shit about social justice.

If you cannot imagine a scenario in which social injustice occurs without forcing a “oppressor vs oppressed” dichotomy onto the situation you are far to simple minded to do anything useful to further social justice.

If you do not consider a victim valid unless you believe that they belong to a larger group of perpetual victims then you don’t actually fucking care about helping victims.

If the only social injustice that concerns you is that committed by the straight white man you clearly care more about demonizing them than you do about actually working towards a world free of social injustices.