bring it to a plinth

First coined by the Roman poet Horace and later adopted by Winston Churchill to describe his own depression, the metaphor of the “black dog” has been used for centuries. Now a mental health charity has reclaimed the expression and wants to bring it to a plinth near you.
-Didn’t find a satisfying explanation of “bring it to a plinth”. Is it the author’s invention? = ‘To make it a cornerstone’?

I suspect something like that, Eugene.
Possibly ‘the charity wants to use it’s logo around the country.’