While not specifically due to "rot" (as per the OP's intentions), the most obvious example of Western civilizational collapse/corruption is the anti-White agenda becoming more open and brazen (since White people built and maintain Western civilization). There are numerous ways this is expressing itself, and accelerating, but the worst offense, that's getting progressively louder, is the non-white criminals who commit crimes against White people, even up to murder, are now openly acquitted of their crimes, because they're non-white, and they hurt White people. This isn't a one off thing, either. Examples of this are happening more and more. We're only in the middle stages of the Kalergi plan genocide of White people. This is going to keep getting worse.
While not specifically due to "rot" (as per the OP's intentions), the most obvious example of Western civilizational collapse/corruption is the anti-White agenda becoming more open and brazen (since White people built and maintain Western civilization). There are numerous ways this is expressing itself, and accelerating, but the worst offense, that's getting progressively louder, is the non-white criminals who commit crimes against White people, even up to murder, are now openly acquitted of their crimes, because they're non-white, and they hurt White people. This isn't a one off thing, either. Examples of this are happening more and more. We're only in the middle stages of the Kalergi plan genocide of White people. This is going to keep getting worse.