Kumasuuliba

How would you translate or use kumasuuliba exactly?

The term appeared in Facebook post from An Ka So describing the way that one woman died after Donald Trump’s supporters stormed the Capitol in the US.

Donali Tɔrɔnpu ka maaw taara bin faso bulonba kan ka jira ka fɔ u ma jɛ ni kalafili jaabiw ye. An balaka kelen sara ka a sabu kɛ ni polosi dɔ ka marafakisɛ ye.
Nin kɛra kumasuuliba de ye Ameriki kɔnɔ ani diɲɛ fan bɛɛ.

Source

In Bamadaba, suuli is a verb meaning ‘lower; lean’, so I am interpreting it as a single noun meaning literally ‘big mouth-lowering’, which we could perhaps translate as ‘scandal’ or ‘shock’ or ‘horror’. Any other ideas or more precise information on how this term is used or if it was rather spontaneously created?