The phrase "among alienated segments of" is correct and usable in written English.
It can be used to refer to specific groups of people who feel disconnected or estranged from a larger community or society.
Example: "The study highlights the challenges faced by individuals among alienated segments of the population, particularly in urban areas."
Alternatives: "within marginalized groups of" or "among disconnected communities of".
Dissent over doctrinal issues concerning things like celibacy and the role of women has driven men from the priesthood and alienated segments of the country's 60 million Catholics.
Edsall examines whether Webb can win "a crucial but alienated segment of the electorate," which is "voters convinced that Wall Street owns both parties, voters tired of politicians submitting to partisan orthodoxy and voters seeking to replace 'identity group' politics with a restored middle- and working-class agenda".
A series of miners' strikes called by Lewis in the 1940s won wage increases and new benefits for miners but alienated large segments of the public.
"This problem began when the administration sought to attribute blame for the financial and economic crisis and alienated large segments of the business and banking community.
Joblessness would presumably climb much higher considering this group would have no legal right to work and it may create generations of people not fully assimilated who are outside the mainstream economy; a generation of disaffected, alienated inhabitants as seen in Europe among segments of the Muslim population.
Exterminist rhetoric has been on the rise among some segments of the far right, including some religious groups.
Significantly enriched KEGG pathways were plotted for DEGs among the three segments of internode.
Controversial demagoguery may boost favorability ratings among segments of their constituency.
But those products will be separated among much smaller segments of the market.
The hotel market is among the fastest-growing segments of online travel, which itself dominates e-commerce spending.
