On January 20 - Trump's inauguration day the liberals are going to protest hot & heavy about abortion rights, climate change and civil rights. Why?

Tens of thousands of them are going to protest. What good does this do?
We all know that they are unhappy people to begin with. I wonder what exactly would make them happy about anything?
On January 20 - Trump's inauguration day the liberals are going to protest hot & heavy about abortion rights, climate change and civil rights. Why?
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