So do I. But on a more localized and small scale. An example...
A few decades ago, the federal government was seizing farms at an increasing rate. The government had given huge loans to farmers beyond their credit and income worthiness, farmers not being exactly finance geniuses, and now the government was seizing farms like crazy, holding auctions for all their property and stuff.
The one day an old 4th generation farmer wired the end of the barrel of a shotgun to the back of the head of a government person - walking him into a bank. He was arrested of course, but it triggered resistance. Across the country, farmers started barricading their farms, having their deer rifles and most farmers are excellent shots. Body armor doesn't stop deer rifle rounds. The seizing of farms stopped.
Horrific as WACO was, the government was going off the deep end, having decided all hardcore religious cults and communes had to be broken, using trivial laws to do massive raids, seizing their children, arresting everyone. WACO and then Oklahoma City brought that to a stop as well.
The fact is once the public starts deciding they're not going to take it, there will be "crazies" with guns who will fight back - even if totally immorally and murderously. The government will shoot people. But government people get real nervous when people start shooting back. I know this is a strange theory, but it is crazies who protect us normal people when the government goes too crazy with power.
It is the nature of ALL governments to endlessly want more and more and more power, with less and less and less respect for individual rights and less and less tolerant of opposition and divergent life styles. There will always be a battle line between government and citizenry. The history is human and civil rights is the history of people fighting against the government obtaining human rights by force, not the government fighting against people to establish human rights.
In my opinion, the more able to defend themselves citizens are, the less likely the power and oppression inherent to government will grow to the point of a massive national revolution in which whether the government wins or the revolutionaries win, lots and lots and lots of people - millions - die. Then the outcome - either way - is horrific.
It isn't a question of whether citizens with rifles could defeat the combined military and police forces of the government. Rather, it is a question of how to prevent it ever reaching anything close to that. As far as murder and mass killing? That's been going on across the world for all of known recorded history - though the greatest mass murderers always has been by the government, not citizens.