"modern demonstrations" is correct and usable in written English.
You can use it when referring to protests or shows of support that are taking place in the present day, usually using more modern methods like social media, etc. For example, "Though protests have been going on for many years, the modern demonstrations have proven to be much more effective."
The battle serves as a modern demonstration that air power in a supporting role to ground forces can be of great assistance in halting and defeating a major ground operation.
It takes on two crucial leading missions that are propelling roundly construction of national modern agriculture demonstration zone and integrating urban and rural.
Leipzig has stunning architecture and some grim modern history (large demonstrations here in 1989 helped precipitate the fall of the Berlin Wall).
With the use of modern metamaterials, practical demonstrations of such devices may be possible.
The encampment grounds will open at 9 a.m. and will feature history exhibits, drill demonstrations and modern and period vendors, Bowman said.
Using the current protest in France as a springboard, students will research the contexts, causes, main messages, and final outcomes of other such demonstrations in modern history.
It was also made before one of the most hilariously ineffectual anti-NYT demonstrations of modern times: Donald Rumsfeld publicly cancelling his subscription, on account of the paper's 9/11 anniversary coverage.
Hours after the Istanbul explosions, which killed at least 27 people and injured 450, one of the largest weekday demonstrations in modern British history wound its way through Trafalgar Square in London to protest Mr. Bush's policies in Iraq and Prime Minister Tony Blair's down-the-line support for Washington.
The work completed herein provides a complete demonstration of modern coding practices.
Seäsonal stakes out territory in the middle, combining fine ingredients and modern techniques in a demonstration of the benefits and flaws of its approach.
