Don't mess with "Confident" singer Demi Lovato

Don’t mess with Demi Lovato

That’s what fans learned after watching the 23-year-old’s latest Instagram post, in which Lovato repeatedly elbows a combat grappling dummy in the groin during an intense workout.

“I hate the word victim,” the “Confident” singer wrote in the post, uploaded on Friday. “I never have been and I never will be.”

On Snapchat, Lovato was much tougher with her words, adding “Come at me motherf—ers” to another video of the ground-and-pound.

The self-defense posts come a day after the singer posted a lengthy late-night Twitter rant, where Lovato lashed out against online trolls.

“Maybe you DON’T know every aspect of my life so maybe you shouldn’t assume you know,” Lovato wrote in the early hours of Thursday, adding a middle finger emoji.

“Maybe my midnight rants are part of my bipolar disorder,” the singer continued in a now-deleted post. “Can’t change being crazy.. But you can press unfollow.”

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The former Disney Channel star went on to explain she’d “rather annoy people with my honesty and loud opinions than stay silent and be fake as f—. I rant online because people assume they know things and their entitlement to know makes me feel obligated to defend myself.”

“I hear haters because I am human,” Lovato wrote on Snapchat, her text against a black backdrop. “I react because I am human. I am NOT a victim. I don’t want your sympathy and I don’t need anyone’s empathy.”

No matter what, it’s clear that Lovato is a survivor – which makes her cover of “I Will Survive” for the upcoming Angry Birds Movie all the more perfect.

And as for the online commenters who flood Lovato’s social media channels with negativity? Lovato thinks they should be ashamed.

“Imagine the love of ur life/biggest crush finding out u spend time on the internet commenting negative shit about celebrities,” she said in tweets that have since been deleted. “Imagine your grandparents finding out you spend your free time being an internet troll to celebrities you don’t even know. Or imagine telling your future children how you spent more time cyberbullying strangers than you did building a better future for them.