Why is it hard for many people to accept that there will always be people, who will not agree with your views ?

Not sure if it's the virus causing it but for many Decades, Centuries even, both Democrats and Republicans have differed in their opinions, most usually respected each other's right to have an opinion even it was the opposite of theirs. It's only in the past few years where it has become this miasma of hatred and lies and conspiracy theories... Not sure where that's all coming from but it isn't the way Americans should be acting with their fellow Citizens, yes, we may differ but we are ALL Americans and should all be working to a common goal of respect for our Democracy and enjoying the rights we've fought for and earned!