Mexican journalist Cecilio Pineda Brito covered drug trafficking issues in a region of the southern state of Guerrero where criminal groups are extremely powerful.
Email surveillance, blocking of websites with content that is awkward for governments, or the interruption of services such as WhatsApp are symptoms of the threat to freedom of expression online, according to Latin American activists.
Mexico is the most dangerous country in Latin America for journalists. In 2015 it accounted for one-third of all murders of reporters in the region, and four more journalists have been added to the list so far this year.