Mom had a memory of this: neighbors throwing rocks and potatoes at my dad's childhood home near Spokane, WA, to strike out against his family's use of German.
I read it differently than my mom. Because my family suffered abuse, I prefer to welcome immigrants and refugees with all of their baggage including language and culture.
Story #2: Today I walked in my neighborhood. I live in Washington County, Oregon, in the Portland metropolitan area.
I passed the closest Mandarin school, just a block from my home. It's run by a Chinese couple for young kids. This is one of several such schools within a few-mile radius. "Learn thy parents' language" is the command.
One day last spring when I walked by this same school a teacher was leading a class of ten or so young kids to a playground across the street. So I asked the teacher, "Are you speaking to the kids in Mandarin or English?"
"We are speaking Mandarin," she replied (in English).
Thankfully, no one throws rocks at the Chinese Immersion school for teaching Chinese. The kids are learning Mandarin, which will be a useful skill when they're working after graduation. China is a big market for goods made by businesses no more than a few miles away from my home.
Here's a statistical picture of the racial background of people in my county: