A day before going on a shooting rampage that left two Las Vegas police officers and a bystander dead, Jerad Miller, one of the gunmen, posted this on Facebook:

“The dawn of a new day. May all of our coming sacrifices be worth it.”

Witnesses reportedly said Miller, 31, and his wife, Amanda, shouted, “This is a revolution” and “We're freedom fighters” when they ambushed the officers who were on their lunch break at a pizza restaurant.

If their social media accounts are any indication, rants about attacks and disgust with authority were a common thread in their lives.

“To the people in the world...your lucky i can't kill you now but remember one day one day i will get you because one day all hell will break lose and i'll be standing in the middle of it with a shot gun in one hand and a pistol in the other,” Amanda Miller posted on Facebook on May 23, 2011.

Amanda Miller created and posted this Bitstrip comic to her Facebook six months ago. (Facebook) More

After killing Police Officers Alyn Beck, 41, and Igor Soldo, 31, and taking their weapons, police said, the Millers fled across the street to a Walmart store, where they shot and killed customer Joseph Wilcox, 31, before apparently taking their own lives in a suicide pact.

The couple, who married in September 2012, moved from Lafayette, Indiana, to Las Vegas, Nevada, in January of this year.

Photos on 22-year-old Amanda Miller’s Facebook page shows the couple celebrating Christmas with family two weeks before departing for Nevada. In one photo, she poses with copies of the “Shooter’s Bible” and “Extreme Survival.”

“My new books that my Grandma Paula got me!” she wrote on Facebook.

Amanda Miller shows off books she received last Christmas. (Facebook) More

According to the Lafayette Journal & Courier, Jerad Miller had a long history of arrests and convictions for drug offenses while in Indiana.

In a July 8, 2013, video he posted to YouTube, he vents about the government making a profit from an ankle monitor he has to pay for and wear while under house arrest. He also rants about the local courthouse and questions why citizens need permits.

“You have to go down to that big stone structure, monument to tyranny, and submit, crawling, groveling on your hands and knees,” he says on the video. “Sounds a little like Nazi Germany to me or maybe communist Russia.”

Amanda and Jerad Miller in April in Las Vegas. (Facebook) More