This is a point we all need to remember.
Even when the benefits outweigh the costs, the tabulation of gains and losses by groups highlights the facts that international trade has distributional consequences. That realization should not induce policymakers to hinder trade via protectionist measures. Rather it reminds us that transfers from gainers to losers is a prerequisite for trade to be Pareto improving.
You always see economists arguing. But you would be hard pressed to find an economist who objected to this concept – they may argue about magnitudes, but there is a broad agreement with regards to this idea.