Protestors have torched businesses, hurled stones, and smashed the windows of government buildings. Police fired tear gas to break up crowds, and protestors tried to throw some canisters back.
The gunmen attacked the villages of Sagho and Toekodogo, in the Barsalogho district, on Saturday, Defence Minister Cheriff Sy said in a statement, describing them as members of "armed terrorist groups".
The halt of the ethical branding scheme will be a huge risk to chocolate makers producing in Western markets, because the consumer demand for sustainable products is on the rise.
Nearly half a million people have been displaced this year in Burkina Faso alone. The landlocked country has become the new hunting ground for extremists linked to the Islamic State group and al-Qaida.
The village is about 60 kilometres (35 miles) from the border with northeast Nigeria, the springboard for Boko Haram raids and kidnappings in neighbouring countries.
Skywatchers along a narrow band from west Africa to the Arabian Peninsula, India and southern China will witness on Sunday the most dramatic "ring of fire" solar eclipse to shadow the Earth in years.
Joselia began singing at the age of 3, and recently told her mother she wanted to do a song about fighting the coronavirus.