I too think that the support embassies provide to their journalists who are in dangerous situations can be helpful, and sometimes vital.
What governments can do, as some governments, like the Government of Canada, are already doing, is raise the profile of the issues we have described, such as censorship and the lack of information being provided to the Venezuelan people.
There is one aspect that has not been mentioned and that is financial support. Canada could provide funds for training initiatives for local journalists who need cybersecurity and physical protection on the ground very badly. They also need protective equipment. There are even some media being persecuted by the government that need journalistic material. How that can be put in place is another matter.
There are several international organizations such as Human Rights Watch and Reporters Without Borders, and several others, who are working to find solutions to directly assist vulnerable media, and sometimes journalists who are in danger as well. It is true that there are financial needs and realities behind all of that, as well as a great need for training for independent journalists who don't know how to defend themselves in the face of threats of physical and verbal violence, arrests and online attacks. This type of assistance would be helpful.
The most important thing is to continue to speak out and explicitly condemn what is happening in those countries, notably in Venezuela.