This video from England says about itself:
The PCS Samba band play in Albert Square in Manchester to entertain the marchers protesting against austerity outside the Tory party conference on 4/10/2015.
From daily The Morning Star in Britain:
Wedding couple celebrate with samba
Monday 17th October 2016
GUESTS at a wedding reception in Yorkshire celebrated at the weekend to the thumping rhythms of a trade union samba band, with the bride and groom playing leading parts.
Dave Vincent and Rowena Fehilly are members of Civil Service Union PCS’s samba band.
The band plays at trade union and political events across Britain. They have been seen by tens of thousands of participants in demonstrations and rallies, including huge marches in London. Dave and Rowena live in West Yorkshire and have been together for 23 years.
They are active in the trade union movement, including Manchester and Calderdale Trades Union Councils.
Around 20 members of the band performed, with Dave acting as conductor and Rowena, still in her bridal dress, playing one of the bass drums which were decorated with political slogans including “Protect our NHS,” “Austerity has failed,” “Stop the Cuts” and “Support our Junior Doctors.”