It would seem that if you look to the law to protect you - and yours - it is only sensible not to be seen breaking or bending that law. You have to be squeaky clean at the moment, is it worth taking a risk at this particular time? No judge or magistrate would look kindly on anyone who took the law into their own hands.
It may well be a good cause, but you could lose all official support for that cause by acting rashly.
Although due processes of law are very lengthy and slow, once completed a judgement can - and will - be enforced. Taking the law into ones own hands means being alone to handle the consequences, anything you achieve could be overturned at any time with no back up.
Take a longer term view and don´t reject the protection of the law.