In this hypothetical dictatorship which we were discussing, it would actively involve the state going after Muslims. Like it or not, they form a significant chunk of our population and is greater than the populations of most countries in the world. I just don't see them taking it lying down without some major pushbacks. This is considering that this dictatorship only limits itself in taking care of Islam.
If this is the end goal of the dictatorship then consider it a done deal that the non Muslim population will co operate with such an Emergency for such is the opinion built over a period of generations & centuries , accelerated in the last 2-3 decades that the Sanatan society holds about the peacefuls, that they'd willingly endure such hardships for a permanent solution PROVIDED there's a casus belli.
The only busybodies who'd possibly object could possibly be the Sikhs. As far as the LeLi lobby goes be they the Lutyens mafia or the Khan market gang they'd go down faster than a 1$ per hour hooker.
As far as the politicians go , for perspective look at what happened to them in the aftermath of the annulment of Art 370 in J&K. Where was the much touted uprising everybody but especially the usual suspects within & outside the country hoped for ?
Finally let me recount to you the conversation ( from memory based on what I read long ago ) Zhao Zhiyang the Chinese premier had with Deng Xiaoping - the supreme leader of China then , during the Tiananmen Square protests for democracy by the students in the late 1980s in China where Zhao was pleading for the students asking Deng to enter into negotiations with the students & concede at least some of their demands.
The politburo & its standing committee all comprising of party elders - veterans of the communist revolution & the Chinese civil war besides being Deng loyalists were naturally suspicious & being dyed in the wool politicians knew once they conceded some demands it'd be only a matter of time before more such demands were made & the entire CCP would be on a slippery slope.
Hence , when Deng repeatedly asked Zhao why was he so confident he would succeed. Zhao replied it was inevitable since it wasn't merely the students but the workers , peasants , academicians , scholars , intellectuals , press etc who were demanding it & that he was bound to succeed as he had rallied ALL the masses to his cause.
Deng merely replied that in that case , he had nothing as the armed forces of China was behind Deng. The rest is history. Zhao suffered imprisonment followed by house arrest for the rest of his life till his death some 2 decades after the events of the Tiananmen Square. He wasn't even given an official funeral being totally shunned with his name stricken from the records of the CCP , something done to traitors .
Please understand the dynamics of how power is wielded apart from the mechanics of power. Power still flows thru the barrel of the gun. As true as when Mao first uttered it , was true before & will continue to be true .