The Absurd GOP

[The Architect Of Fate]

If they are offended, they can ask the person not to make those comments or jokes around them.

Or they can report them to HR and if the offense goes against the rules or HR policies they can be shown the door. Spoiler alert actions have consequence's you clearly choose a stupid joke over your employment. 

If that person then harasses them by intentionally going out of their way to make those remarks to this individual, the harasser should be fired on the spot.

True

It's really not that hard; if someone at work says something you don't like, ignore it.

Or report it as is your right as an employee 

Edit - Though to address your specific example, it sounds like "treated this way" means they have already skipped the first step and gone to targeted harassment - which would again hold the same consequence of immediate firing.

Nah you shouldn't be saying offensive shit at work full stop and if you do the company has every right to fire you. It's super simple don't be a dick at work.