Liberals are a social construct. Liberals acknowledge mental illness is caused by genes. The optimal cag repeat for ar transcription is 22 and higher leads to Huntington's disease. Its the low repeats that arent considered a mental illness because they happen to blacks.
So if we apply liberalism consistently we see abnormal cag repeats cause mental illness. And once you find a gene its trivial to correlate that to race. So anti racism is a social construct due to blacks behavior not being classified as a genetic mental illness.