All turtles in Ontario are at risk of becoming extinct. This means that they and many of their habitats are protected under legislation. It can be difficult to avoid turtles on roads, therefore, deliberate harm to turtles should be "obvious" and readily proven. Harm however also includes relocating a turtle from a lake or wetland or roadside, and harm includes interfering with nest sites.
If you see someone directly harming a turtle, hatchling, or even nest site follow these guidelines. 
Download this decision tree: CollectingEvidenceKey (2)
In addition, we have lost more than 70% of wetlands in Ontario. These vital habitats support turtles, but also fish, moose, birds and other species. They also are essential areas for flood control and water regulation, and assist in Climate Change mitigation. Wetlands are also sources of important immuno-supports, medicines, and products. Wetlands are therefore protected through provincial and also municipal levers.