I would argue it's sillier to let people take indisputable evidence and push their own subjective perspective upon others, especially when it's a sensitive subject. The only time it's ok to question/challenge something is when there's room for error. And even then, you shouldn't dispute/dismiss something unless you have enough proof to make such claims. We live in a dangerous world, where people feel so entitled to their opinions that they treat them like fact. So, in the case of genocides, it isn't a matter of opinion; no amount of evidence will change already proven facts to a point where you can call it something different. To make things less political, the same can be said about calling the Earth flat. Greeks from thousands of years ago managed to not only prove it was round, but also knew the circumference within roughly 10% accuracy using imprecise tools, experimental math, and doing their measurements nearly at sea level. So - what does humanity gain when we waste our time and resources debating this? People who deny facts are only hurting human progress. The world needs more inquisitive free thinkers, but, only when something doesn't have enough proof, or is incomplete.