You have 2 cows. The government takes 1 of them and gives it to your neighbor.
You have 2 cows. Your neighbor has none. You feel guilty so you vote people into office that will tax your cows, forcing you to sell 1 of your cows to pay for the tax. The people you voted for take the tax money and buy your neighbor a cow. You feel righteous.
You have 2 cows. The government takes both of them away from you and provides you with small amounts of milk each day.
You have 2 cows. You sell 1 of them and buy a bull. You build up a herd of cows.