I have studied the Brazilian coup of 1930 in a bit of detail. It's worth noting that, unlike China, Iran, and Italy, the 1930 coup was a result of power politics, not ideology. This doesn't matter much to someone in the trenches, but it did mean that, for the vast majority of Brazilians, life didn't change in any particular way. The autocratic government of Getulio Vargas didn't produce "push" factors for regular Brazilians as a result.

This isn't to say that there was no violence or resistance. Vargas' success in 1930 ended cafe com leite politics, which primarily benefited the states of Sao Paulo and Minas Gerais (major producers of coffee and dairy respectively), which earned him a lot of rich and powerful enemies from those states. An unsuccessful "constitutionalist" rebellion did lead to some exiles in the political class, such as Lindolfo Collor, but most of those people accepted an amnesty offered in 1934 and returned home.

As for political outsiders, communists and anarchists chose to resist the regime, which rounded them up by the hundreds and placed them in concentration camps or used Saw-like techniques to destroy their bodies and minds. The Brazilian Integralist Action, the Brazilian fascist party, saw the coup as a precursor to a true fascist Brazil lead by Plinio Salgado, their fuhrer. They were publicly very pro-regime, but privately made plans for the government's overthrow. This included drawing up huge lists of Jews, communists, freemasons, and democrats, who would all be liquidated. Fascism became especially popular in the navy, where membership in the AIB was necessary for advancement on some ships. When political parties were banned in the estado novo, the AIB plotted a revolution that failed. The leadership fled the country or tried to hide in the embassies of fascist nations. Salgado himself lived in Portugal for a number of years. Several thousand fascists were arrested, but the manhunt never matched the intensity of the hunt for communists.

Artists and intellectuals seem to have been targeted for persuasion rather than oppression, but I don't know very much about it, so I can't comment.

"Regular people" weren't affected much by the regime. The Brazilian people as a whole have never been very political, and in the 1930s most people do not seem to have been thought of as a part of the body politic. Many lived lifestyles that hadn't changed much since the iron age, and slavery continued to be practiced in the countryside despite its abolition 40 years earlier. The regime promised the passage and implementation of new labor laws, but none were ever enforced. Despite this Vargas was personally liked by the poor, and many poor families even chose him to be the godfather of their children!

Most of the information in this post comes from:

*Father of the Poor?: Vargas and His Era by Robert M. Levine

*One of the Forgotten Things: Getulio Vargas and Brazilian Social Control, 1930-1954 by R. S. Rose

*Gaúcho politics in Brazil: The politics of Rio Grande do Sul, 1930-1964 by Carlos E. Cortes

*Brazilian Communism, 1935-1945: Repression during World Upheaval by John Dulles

I know this doesn't answer all of your questions, but I hope it was informative!