I want to destroy the paintings at the museum.
I'm confused, why do you want to destroy the paintings?
The paintings are a part of a deception
You shouldn't damage them because of your disagreement. They are owned by people who worked on them and they would be angry at you for doing such a thing.
Maybe, but I can't live with this deception.
I do not think that it is right for you to destroy them even if you think they are deceiving people. If you need to report it, then do so and the police will take care of the paintings. If you damage someone else's property, then it will be costly for you to defend yourself and you may not even prove that your point that the paintings are deceitful in the end.