"Know your digital rights at the border" is great. It's in the classic tone of raise-awareness campaigns, does not use fearmongering, and can be safely ignored by anyone who already understands them.
"Your phone isn't safe at the border" is not great. It makes you feel afraid, mis-describes the issue (what about laptops?), and doesn't specify the vested interest (it's about rights).
Both parties deserve censure for their choices.