Brazil depends on trucks for cargo transportation since it has very limited railroads. So when brazilian truckers go on strike demanding tax reduction over fuel, there is no products circulating through the country resulting in a loss of millions of dollars.
The New York times news
https://www.nytimes.com/aponline/2018/05/28/world/americas/ap-lt-brazil-truckers-strike.html
G1 news (Brazilian press)
https://g1.globo.com/economia/noticia/greve-de-caminhoneiros-entra-no-10-dia-abastecimento-comeca-a-se-normalizar-em-algumas-capitais.ghtml