Yes, Criterion Pictures' license permits instructors to post links to Criterion on Demand films in Brightspace.
"Members and their Authorized Users may create persistent links to individual films for access by Authorized Users . . . from within Secure Authentication environments" (sec. 3.1).
"Notwithstanding any other provisions of this Agreement, nothing shall in any way restrict or limit the ability of Members or their Authorized Users to engage in . . . any activity that is otherwise permitted under Canadian copyright law" (sec. 3.4).
License Agreement. Criterion Pictures, 2017