This happened in Roanoke, which is left leaning. Republicans are going all out to cheat in this election.
Edit: Here is the law on tampering with ballots in Virginia. Class 5 felony
https://law.lis.virginia.gov/vacode/title24.2/chapter10/section24.2-1009/
something you have to remember about the US is that while it’s a democracy, all the democratic practices were started in the 1800s, often with explicit intention to negate the votes of some discriminated group
And one party is doing their best to keep that heritage of disenfranchisement alive.