Clean as much rust as you can from the axle flange where the center of the drum fits on the hub of the axle.
Use a few large flat screwdrivers or smaller prybars and pry between the drum nad the backing-plate and leave them between the drum ant the backing-plate.Once you get some tension there, smack the center of the axle hub.
Leave the lug-nuts on the wheel studs so you do not damage them accidentally.

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!