The phrase "a wave of indignation" is correct and usable in written English.
You can use it to describe strong and widespread feelings of outrage or outrage. For example, "The latest scandal prompted a wave of indignation from the public."
There may be a wave of indignation against the Brexiters, who lied about what the impact might be.
The disastrous agreement the only one possible under the circumstances that he obtained from Charles aroused a wave of indignation in Florence.
There was a wave of indignation when they learned that the Hague tribunal on Balkan war crimes would not be able to pass death sentences.
The loss of the liner and so many of its passengers, including the Americans, aroused a wave of indignation in the United States, and it was fully expected that a declaration of war might follow.
"A wave of indignation is brewing in Chinese society, which might snowball into a major public outcry if the Japanese authorities continue to take a hardline stance," the China Daily said.
Last month, Mr. Engdahl provoked a wave of indignation when he criticized American writers as "too isolated, too insular" and "too sensitive to trends in their own mass culture".
Eden was scandalised and, riding a wave of popular indignation, prepared a grotesquely disproportionate response: full scale invasion.
"She simply lied through her teeth to get re-elected, forming a wave of national indignation," said Antonio Risério, a historian and cultural commentator.
Now they and their backers are reeling under a wave of popular indignation at such perfidy and of enthusiasm for a return to armed opposition to Israel.Egypt is a typical example.
If, in writing his diatribe, he was hoping to ride a wave of shared indignation, he could not have predicted that the tide would swiftly shift and come crashing over him.
Mr. Papandreou's government has not managed to make a convincing case for the sell-off to many Greeks, where the idea of a fire sale has taken hold, setting off a wave of national indignation.
