Anti-energy activists appear not to know when they’ve lost a battle.

The southern leg of the Keystone XL pipeline, which will deliver crude oil from Oklahoma to Texas refineries, has won the support of President Obama (the president’s footdragging on the northern leg of the pipeline is another matter). The project has obtained permits from the Army Corps of Engineers. And it has withstood legal challenges in the Texas courts.

Nevertheless, however isolated they are in their extremist views, anti-energy protesters remain undeterred in their quest to kill jobs and growth. One of them is Daryl Hannah. The actress, who is as obsessed with the pipeline as her Black Mamba character in Kill Bill was with The Bride, made a minor splash by getting arrested for trespassing on the pipeline’s construction site.

When not living in trees, Hannah’s band of protesters act like they’re at summer camp. They’re climbing trees, running around a construction site like it’s a game of capture the flag, and chaining themselves to equipment.

Texas Land Commissioner, Jerry Patterson, called out their ridiculous behavior:

The protesters are under the misguided notion that they know better than Texans about what's good for Texas. I've got news for them: They don't.

Their scare tactics and misinformation won't work in Texas. Gangs of tree sitters who trespass and defecate on landowners' property don't understand Texas values and culture. Their antics aren't going to convince Texans to “rise up” and abandon our energy industry, an industry that has made this state the economic envy of the United States.

If anything, they're going to convince most Texans to tell them to shut up and go home.

TransCanada has worked responsibly to ensure it has the legal authority and regulatory approval needed to build the pipeline and will diligently work to restore property to its original condition.

Along the way, the company has treated Texas landowners with integrity and respect, which is more than I can say about the protesters and their trespassing, tree-climbing, drum-beating antics.

Apparently jobs, energy security, and civil behavior aren’t high priorities for these extremists.

CORRECTION: Uma Thurman played Black Mamba. I love that movie and should've known better. My apologies.