"Deep emotional pain"

I was working for Club Demonstration Services, giving out Costco product samples in Alpharetta, Georgia right when Costco first began giving out samples again. An old man strolled his shopping cart up to my cart and ended up talking after he had his sample. He told me that the US should kill all the Chinese for what has happened due to the pandemic. As a representative of the company, of course I didn’t get into much of a discussion with him. I did tell him that if all groups killed those who wronged them, that we might not have any people left. Yet, the incident triggered deep emotional pain.