Criticising the Narendra Modi government for levying GST on wheelchairs and Braille typewriters, Congress Vice President Rahul Gandhi said it will put millions of disabled people through further hardship, and demanded its roll back."GST (Goods and Services Tax) on disability aids like wheelchairs and Braille typewriters, once again shows this government's complete insensitivity towards our most vulnerable," Gandhi wrote on Twitter on Monday."Congress demands a full roll-back of this 'disability tax' that will put millions of our disabled people through further hardship," he added.The Congress party had boycotted the roll out of the GST at a function in the Central Hall of Parliament on June 30 midnight, and accused the government of rolling out GST in a hurry.