At least with the above, they are upfront about their intentions and at least we know the full history of them to know that they truly are being satirical.
A "mocking" done by a random passerbyer will only
come of as vague when it comes to intentions. Who's to say his/her mocking is actual mocking or just a cover up for him/her actually supporting what is being mocked?
Either way, someone will get scared or intimidated, someone will lash out hate to you, and someone will feel empowered with whatever toxic views they have but will proceed to hate you once they find out that you are "mocking".
No one laughs either way (especially if execution is horrible) especially at this climate and it really won't help serve you're cause (that is, if you truly are mocking).
Why not take more of a clear stand, converse, help people or something?