People post memes from the local arfcom cache and from other sites as well. Even if the ability was added to block the local ones the remotely linked ones would be impossible to distinguish from other remote media you might want to see.
When you're dead, you don't know you're dead. Hence, dealing with this fact is not difficult. It is only hard for those still living around you.....It's the same when you're stupid.
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They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety. - Benjamin Franklin, 1775