We have to realise not every new idea is acceptable and not every old tradition is worth holding on to.
If true Christians, Jews, muslims, buddists or hindus/Sikhs live and follow their religions in true essence devoid of influence of other factors, there can be a libertarian society however practically speaking that is not possible so a new wave in liberalism is anti theistic, they blame religion for all the ills rather than the ills in basic human nature. Do all atheists do not indulge in crime?
We need to follow Islam according to Quran, Sunnah of Hazrat Muhammad PBUH, his companions and teachings of learned Ulema e Haq, Ijma and Ijtehad, follow and add new ideas if they fall under this criteria. For me the teachings of Islam had been completed during Hazrat Muhammed SAW however the application of each teaching in every different scenario was not complete and there is why Islam taught us how to get guidance if teaching about a certain matter was not found 'directly' in Quraan and Sunnah. If our 'niyaat' is true and in search of truth using method taught by Islam, we will remain progressive.