The phrase "a wave of grassroots" is correct and usable in written English.
It can be used to describe a sudden increase in support or activity originating from the general public or community level, often in a political or social context.
Example: "The campaign saw a wave of grassroots support, with volunteers mobilizing across the country to advocate for change."
Alternatives: "a surge of community support" or "a tide of public engagement".
In the year since Alan's death, a wave of grassroots aid groups have been set up to respond to the crisis – founded by the public, and funded by thousands.
During the recent congressional recess, members faced a wave of grassroots opposition to ACA repeal at town hall meetings in their districts.
A veteran leftist who unexpectedly became Labour leader in 2015 on a wave of grassroots enthusiasm, but was seen by most of his own party's lawmakers as an electoral no-hoper, Corbyn beat expectations with a well-run campaign of striking policies.
By contrast, outdoor air became a concern in the United States as a result of a combination of specific incidents and a wave of grassroots action.
After a massive wave of grassroots support, including an online action reminiscent of the blackout against SOPA/PIPA, the FCC finally proposed rules that would fortify the openness of the Internet and our right to access it.
While major national and global organizations, like the Red Cross, are unquestionably a great place to donate, many people – especially younger employees – prefer to customize their giving, and have in turn spread their generosity among a new wave of grassroots relief organizations aimed at helping underserved communities.
It will take a tidal wave of grassroots backlash and political will in both parties to redress this ongoing scandal.
Perhaps it was out of fear of a new wave of grassroots dissent that the mainstream Japanese press decided to completely ignore the fact that the current protest was even happening.
On the airwaves, stations like Rinse have helped introduce a new wave of grassroots selectors through labels like Hessle Audio and Numbers, whilst BBC 6Music's '6Mix' offers up bi-monthly airtime, and a trip into the record bags of statelier figures such as Andrew Weatherall, Erol Alkan and Goldie.
He was a product of the first wave of grassroots jazz education in the late nineteen-sixties, studying with masters like Kenny Dorham, Lee Morgan, and Joe Newman through Jazzmobile, a program that provided direct access to the music for underserved communities.
But it nonetheless provided a glimpse into the spontaneous wave of grassroots activism that has taken off since Trump's inauguration.
