STOMPer GeneralStomp says security staff at newly-opened Legoland Malaysia tried to force him to delete pictures he had taken of a train that derailed during his visit.
In these scenarios, best recourse is to complain to the LegoLand's senior management.
Real-life experience - Ex colleague of mine had a bad experience at the Sentosa cable car where his family's complaints about a potential safety incident was largely ignored by the people on the ground. He decided to email the Sentosa's top management (names obtained from the sentosa website), and the management apologised and commenced an investigation to look into the issue. The issue was subsequently rectified.
Imo, the stomper should write to LL Malaysia's senior management to complain about this. They would surely take action.