The First Amendment right to protest does not grant anyone the freedom to impose their rights on others through obstruction or force, so stop pretending it does.
The First Amendment right to protest does not mean you can endanger the wellbeing of others, because they have rights too, so stop pretending it does.
The First Amendment right to protest in no way requires anyone to be an absolute idiot in attempts to accomplish nothing more than utter political bullshit, while endangering the wellbeing of themselves and others, so stop pretending it does.