Ms. Yip, may I invite you to refer to the case HKSAR v Hui Man Tai [2007]:
“Police officers in whom the public place trust to uphold the law, but who themselves break the very laws they are empowered and entrusted to uphold, have to be made examples in terms of deterrent sentencing so that others will not be tempted to follow along similar lines and so that public confidence will be maintained.”
NOTE: "Deterrent sentence" means that the sentence imposed on police officers shall be heavier then ordinary persons. Whether the sentence imposed is grossly disproportionate or not is a matter of law, not a matter of politics.