SYNCHRONIZATION IS THE KEY.
Precise SYNCHRONIZATION demonstrates political force as well as potential military force.
It will attract others to become #highnoonpatriots.
Do it in various places to be seen by those likely to sympathize with your grievances.
*As practical. A single timezone is best... particularly at the beginning of the bandwagon effects. The People need to see they are a powerful force. Posting can be anonymous/pseudonymous. Moreover, there are so many things going wrong with governments, one can choose relatively benign/esoteric topics such as (for the US Federal government), "Interpret the 13th, 10th and 9th Amendments more broadly and the 14th less so."