In "Shooting an Elephant," the Burmese people have a very negative attitude towards imperialism. This is shown clearly in the first paragraph when Orwell is describing his experience as a sub-divisional police officer. The Burmese, for example, take every opportunity to vent their discontent towards colonial officers by spitting at European women or jeering at British officers.
As Orwell comments, however, none of the Burmese have the "guts to raise a riot." In other words, the Burmese will only vent their discontent if they think it is safe to do so. In the second paragraph, the reason for this becomes clear: the Burmese are treated very cruelly by the British, and the fear of physical violence keeps them in a state of submission. Orwell describes, for instance, the "wretched" Burmese prisoners who are kept in cages and beaten with bamboo sticks.
The Burmese, therefore, hate the system of imperialism because it is used to oppress them. But they are unable to overcome imperialism since there is a constant threat of physical violence.