The phrase "a major demonstration of" is correct and usable in written English.
It can be used when discussing a significant display or evidence of a particular quality, skill, or phenomenon.
Example: "The event served as a major demonstration of the community's commitment to sustainability."
Alternatives: "a significant display of" or "a substantial exhibition of".
That was the day I organized a major demonstration of factory workers in Nanjing, hundreds of miles south of Beijing.
With a major demonstration of authority, Hollande could start pushing the French by calling on the full institutional powers of the presidency in the manner of François Mitterrand's historic course reversal when he turned away from Socialist economics in 1983.
Though just three minutes long, it quickly became an election-day sensation, helping fuel a major demonstration of as many as 5,000 people on Monday evening in central Moscow.
The Brotherhood's leaders also said they would call out their supporters for a major demonstration on Tuesday against the reassertion of military rule.
Under the heading "Sadiq Khan won't stand up for London's Tamil community" it is claimed that when Khan was a government minister "he did not use his position to speak about Sri Lanka or the concerns of the Tamil community in parliament," a reference to a period when London saw a major demonstration about the plight of Sri Lankan Tamils towards the end of that country's long and bloody civil war.
To regroup: Syrian protesters, after authorities cracked down on a major demonstration Tuesday in the city of Homs, where they arrested a prominent dissident.
The news came as protesting farmers clashed with riot police in Athens, as part of a major demonstration against austerity measures.
Greek riot police fired tear gas at farmers protesting against pension reform plans who hurled stones, fruit, and vegetables at the agriculture ministry in central Athens on Friday ahead of a major demonstration outside parliament scheduled for later in the day.
Of course, do as Robert Frost advises, but also occasionally follow the crowd to what could be a major demonstration or just a cool street performer.
And in spite of the many major demonstrations, of which there were seven in total - there were 80 000 demonstrators in Brussels last Thursday - there were very few incidents: just a few shop windows smashed and the odd case of hooliganism.
