And if anyone has doubts, authorities quickly put an end to them. The state news media often makes examples of people who fail to move out — and who are killed or injured.We get how it would be annoying and all to have your citizens ignore sensible advice from the government. But is killing off scofflaws the way to proceed?
Of course, it's possible that authorities are putting an end to the doubts, and not the Cubans. You just can't tell, though, from the way these two sentences are written.