Death curses are not easy, and you’ll want to have your own spiritual hygiene and protections on point, not just in case of backlash, but in case your activity attracts things you don’t know how to deal with.
If it was an easy and quick solution to the problem you wanted, and I assume safe(er) for you, you’re better off with a binding. Look up Vovin’s freeze spell 
Note: OP edited to remove pollical slant. The form has a moratorium on politics aka the No Politics rule. 