I knew that you were going to get attacked because someone would take your statement as hateful. Unfortunately, it takes longer to collect data than it does to write a dumb comment. They took your factual statement of Simpson's paradox being able to drive one global summary (lower overall scores - a bad thing) counter to the local summaries (increased scores by all groups - a good thing) explained by shifting population proportions as you "blaming immigrants" for the bad outcome when the logical extension of your statement is "hold on, we may have a good thing going on". Ignore @mmooss.