The phrase "aggressive era" is correct and usable in written English.
It can be used to describe a period characterized by assertive or confrontational behavior, often in a social, political, or economic context.
Example: "The aggressive era of the 1980s saw significant changes in global politics and economic policies."
Alternatives: "hostile period" or "contentious time".
The aggressive era of stop-and-frisk policing in New York City is, in every sense of the word, on trial: the subject of a high-stakes federal court case, scorching denunciations from civil rights leaders and emotional calls for its dismantlement by liberal lawmakers.
Honed to furious perfection through years of slog on the London pub circuit, the songs on Iron Maiden's self-titled 1980 debut album ushered in a new and more pointedly aggressive era for heavy metal, with bassist and de facto leader Steve Harris's fearsome determination and idiosyncratic playing style driving everything breathlessly forward.
The community underwent an aggressive era of expansion from 1983 to the 1990s.
They may also herald a newly aggressive era for the city attorney's office, which under Feuer's recent predecessors has honored its claim to be the "people's lawyer" more through rhetoric than reality.
It also epitomises the friendly, far-sighted merger wave of the 1990s, which many people find more appealing than the cut-throat takeover battles that characterised the aggressive 1980s.That era, too, had its defining moment: the $25 billion takeover of RJR-Nabisco completed in 1989 by KKR, a prominent leveraged-buyout firm.
Henceforth "such sweet, soft-edged comedians as Harold Lloyd and Buster Keaton would have a harder time in this era; aggressive, impertinent personalities like W. C. Fields, Mae West, and the Marx Brothers -- Groucho in particular -- would flourish by assaulting the powerful".
King's demise was, of course, a pivotal incident in the 1960s because it represented the switch from the nonviolent civil rights movement to the more militant and aggressive Black Power era.
Names like Peachey, Campbell, Rogers, Stevens and Lang (John and Martin) evoke an era of aggressive football and nice guys.
But it is clear that creating confidence in a new era of aggressive enforcement will take work.
The man credited ushering in the modern era of aggressive, proactive policing in New York City, former NYPD chief William Bratton, was a featured guest the day before.
BERLIN — The European Commission opened investigations Monday into whether I.B.M. had abused its dominant position in mainframe computers, signaling that the era of aggressive prosecution of American technology leaders in Europe did not end with the Microsoft antitrust case.
