All protections of civil liberties and rights to due process can make the police's job more difficult - if you consider the police's job to be something like "catching bad guys without regard to any collateral damage that might be caused along the way". But in a free society that's not normally the job we want the police to do.
Of course the trouble in this case is that we either have private, secure communication or we don't. There is no halfway measure available. So both locking the police out of everything and giving them complete access to everything might be simplistic non-solutions to the real issue but they might also be the only options we have on this one so a least-of-evils argument may have to prevail.
Of course the trouble in this case is that we either have private, secure communication or we don't. There is no halfway measure available. So both locking the police out of everything and giving them complete access to everything might be simplistic non-solutions to the real issue but they might also be the only options we have on this one so a least-of-evils argument may have to prevail.