So here's the thing about climate change.

Robert Goddard can gift space travel to the world.

Stephen Hawking can gift great physical theroies to the world.

Ghandi can gift peace to the world.

But no one can gift a solution to climate change to the world.
We each have to contribute.

Learn more here, and here.

Oh, and totally unrelated.

Then said Jesus unto them, But now, he that hath a purse, let him take it, and likewise his scrip: and he that hath no sword, let him sell his garment, and buy one. - Luke 22:36

So I guess the answer to the question 'Who would Jesus kill?' is someone who would try to take your life. He thought it was so important to defend yourself that you should sell anything you have even up to your clothing to get a weapon to protect yourself. Hmm.
Perhaps there is something to be learned here?
Perhaps you should put in some time and research and figure out what you believe.