Eleven years ago, my husband and I started fostering a sister and brother,“Taylor” and “Martin,” and we adopted them a year later. Our daughter was 5, and our son was an infant, but they are now 16 and 11 and are smart, kind, and mostly well-behaved kids. My husband and I are white, and they are Black, but we’ve done our best to have honest, age-appropriate discussions on race, our privilege, and how messed up the systematic oppression and racism in our country is. I thought we had done an OK job … until yesterday.