Race condition
Race conditions arise in software when an application depends on the sequence or timing of processes or threads for it to operate properly. As with electronics, there are critical race conditions that result in invalid execution and bugs. Critical race conditions often happen when the processes or threads depend on some shared state. Operations upon shared states are critical sections that must be mutually exclusive. Failure to obey this rule opens up the possibility of corrupting the shared state.
Randall L. Gibson
"Such status," Sharfstein explains, "could not mean anything but whiteness. ... As much as racial purity mattered to white Southerners, they had to circle the wagons around Randall Gibson. If someone of his position could not be secure in his race, then no one was safe"."