If you are offered a bribe in your own office the honest you will definitely and indignantly decline it. But the fact is bound to remain forever with you only. Because, you won't be able to share it with anyone in your office for the simple fact that you are never sure who is how much in it! You are only likely to antagonize the system and the system will retaliate by making you a scapegoat. You cannot even take it to the top, because at the top level corruption combines with power making it lethal and ominously harmful.
Of course, a movement against corruption must be hailed as most welcome praying pitifully that it becomes a revolution. But ultimately power mongering may emerge within the committee fighting corruption. Power equations start building up between committee members and the most powerful ones get things done their way even if it means conniving with the vested interests of corruption. So you cannot help but doubting the final outcome which is bound to make you suffer more.
Therefore, the best policy is to enjoy your honesty in your innermost soul and be immensely proud of it. For the honest you self-respect is a prized possession without which you cease to exist. Why not then be honest and enjoy! Anybody dares rob you of this! Only you can decide.