I don't know what it would take in numbers to challenge a current regime that operates outside the laws. Tyrannical governments have a hard time making a case for tyranny and they have to rule via fear. Currently this has led to a lot of discontent with the powers that be. Currently the people are going through that phase wherein they are exhausting all of their nonviolent political and legal avenues of redress. When our forefathers went up against King George, you remember what they did prior to engagement of a physical nature: "In every stage of these oppressions we have petitioned for redress in the most humble terms: our repeated petitions have been answered only by repeated injury. A prince, whose character is thus marked by every act which may define a tyrant, is unfit to be the ruler of a free people." Declaration of Independence "We have petitioned; we have remonstrated; we have supplicated; we have prostrated ourselves before the throne, and have implored its interposition to arrest the tyrannical hands of the ministry and Parliament. Our petitions have been slighted; our remonstrances have produced additional violence and insult; our supplications have been disregarded; and we have been spurned, with contempt, from the foot of the throne! In vain, after these things, may we indulge the fond hope of peace and reconciliation." (an excerpt from Patrick Henry's Give Me Liberty speech) Right now the people are holding out for a miracle with political propaganda prostitutes (like Donald Trump as an example.) The bottom line won't change, but the resolve of those who favor Liberty will grow even more intense. The public relations war will test the presuppositions of many and change the balance of committed fighters on both sides. So, how far will those representing a de facto (that is, illegal) government go in order to suppress a grass roots campaign to restore Liberty? There will first be a war for the hearts and souls before there will be any kind of insurgency. But, if we articulate what is we want to replace the status quo with, a sufficient number of people will emerge that can overcome the limitations of technology and the presence of a militarized police.