Money Money Baby - All about the Benjamin's $

Is it unethical for a journalist to donate to a cause they are covering? Can a journalist be impartial to gun violence/ gun control legislation if they donated money to a GoFund Me page that aids the victims of the Vegas shooting?

Second, can a journalist give money to a homeless// in need person if they helped them with a story? Is it unethical to do so?

Money is tied to power yes, but it can be used for good so where can the line be drawn to keep journalists fair and impartial?