Can I use this sigil an mantra for protection has anyone use it before

https://www.bitchute.com/video/UPHFjl81XTU/ hey whats your opinion on this ive seen it but still not sure still researching but man if true this should be meme worthy just put down this is what your communism leads to man their locked in their rooms an left to die this is disgusting first they...

the Celtic knot can i use it its the one with tree points an a circle can i use it do i just invert it should i remove the circle