Is it possible the polar shift already happened or it will happen at a safe pace?

polar shifts have happened before just not in your life time. It has not happened yet, its slowly changing but theory is that with increased technology use we are causing them to shift faster. and polar shifts could kill some people but not possibly not everyone. nature will be hurting itself but will rejuvenate rapidly whereas the human race will be much slower, IF many people even die, which i doubt, maybe a couple thousand. But we hurt nature much more continuously then it will in one swing.