As David shows with the bear-baiting example, it is easy show many examples of activities in the past which we would now consider unethical, yet at the time many (most?) people would not have objected to.
If the opinion polls showed a 70% support for fox hunting, or even a 99% support for it, it would still be unethical. Frankly, most people do not have the biological knowledge and philosophical background to make informed decisions on issues such as these, which concern the well-being of other sentient creatures, not just humans.