Several thousand fishermen blocked Bangladesh’s busiest highway on Sunday, police said, as protests escalated over a two-month fishing ban in the Bay of Bengal.The fishermen say the 65-day blockade – intended to replenish fish stocks – is driving them out of business.Their one-hour protest at the coastal town of Sitakunda caused several kilometres of traffic jams on the main road linking the capital Dhaka to the second city of Chittagong.Local police chief Suman Banik said the demonstration by…