Meanings of new grassroots in English

One year on, has that initial fervour among the new grassroots activists remained?

It should include progressive minority organisations, particularly those focused on socioeconomic concerns, and new grassroots organisations, rooted in local communities.

A new grassroots group in Fianna Fáil has organised to oppose moves to form a coalition between the party and Fine Gael.

A new grassroots activist group is aiming to swing the House of Representatives back in favour of the Democrats at the 2018 midterm elections.

A new grassroots movement in American Samoa is hoping to collect 10,000 signatures in a bid to help save the local tuna industry.