How can you acquire shields in Monopoly Go?

In Monopoly Go, players can acquire shields through various in-game methods. Shields are primarily used to protect properties from being targeted by other players' action cards. To gain shields, a player may purchase them using the in-game currency during their turn. Alternatively, shields can be earned as rewards for completing certain in-game events or challenges. Some special cards and Chance or Community Chest cards also grant shields when drawn. It's important for players to strategically acquire and use shields to safeguard their valuable properties and maintain a competitive edge throughout the game.