The term "Red Weißeritz" is not widely recognized in established encyclopedic sources. It does not correspond to a well-documented concept, entity, or phenomenon in publicly available reference materials.
The name appears to combine the English word "Red" with "Weißeritz," which resembles a German toponym. "Weißeritz" is the name of a river in Saxony, Germany, and is also associated with the Weißeritz Valley (Weißeritztal). There are two main tributaries in this region: the Rote Weißeritz (literally "Red Weißeritz") and the Wilde Weißeritz ("Wild Weißeritz"). These names refer to actual geographical features—specifically streams or small rivers—that converge to form the main Weißeritz river.
Given this context, "Red Weißeritz" may be an English translation of "Rote Weißeritz," a river originating in the Eastern Ore Mountains (Erzgebirge) and flowing through southeastern Germany. It joins the Wilde Weißeritz near the town of Dippoldiswalde to form the Weißeritz, which later empties into the Elbe River.
Accurate information on "Red Weißeritz" as a distinct term outside geographical reference to the Rote Weißeritz is not confirmed. The usage of the term in other contexts—such as cultural, political, or historical—remains undocumented in reliable sources.