DC Freedom Convoy - 1st Amendment Violations

Each day the Freedom Convoy gets close to the District of Columbia they are met by the Metropolitan Police Department. MPD, repeatedly blocks off the off ramps that enter the District, therefore violating their first amendment rights. The United States Constitution is quite clear, it provides the citizens the right to petition their government to redress their grievances. The Supreme Court has upheld this standard. Do you think the truckers 1st Amendment is being violated? LEt me know.