How to hide/unhide an array of objects with a mouse click.

I am trying to write a C# scrip that allows me to hide with left click then unhide with right click game objects. I have tried looking everywhere but nothing seems to be coming up. there is an array of game objects that have to be hidden/unhidden and the script is bound to the player. This is as far as I got:

 using UnityEngine;
 using System.Collections;
 
 public class RealmSwitch : MonoBehaviour {
     
     public Light lt;
     public GameObject[] Realm1;
     public GameObject[] Realm2;
 
 
     // Use this for initialization
     void Start () {
         lt = GetComponent<Light>();
         lt.color = Color.red;
     }
     
     // Update is called once per frame
     void Update () {
 
         if (Input.GetMouseButtonDown (0)) 
         {
             foreach (GameObject go in Realm1) {
                 GetComponent<MeshRenderer>().enabled = true;
             }
             foreach (GameObject go in Realm2) {
                 GetComponent<MeshRenderer>().enabled = false;
             }
             lt.color = Color.blue; 
         }
 
         if (Input.GetMouseButtonDown (1)) 
         {
             foreach (GameObject go in Realm1) {
                 GetComponent<MeshRenderer>().enabled = false;
             }
             foreach (GameObject go in Realm2) {
                 GetComponent<MeshRenderer>().enabled = true;
             }
             lt.color = Color.red; 
         }
     }
 }