diff --git a/lib/post_action_creator.rb b/lib/post_action_creator.rb
index 47538b1b459..215345c4250 100644
--- a/lib/post_action_creator.rb
+++ b/lib/post_action_creator.rb
@@ -156,6 +156,15 @@ private
     return if @post.hidden?
     return if !@created_by.staff? && @post.user&.staff?
 
+    # Special case: If you have TL3 and the user is TL0, and the flag is spam,
+    # hide it immediately.
+    if @post_action_name == :spam &&
+        @created_by.has_trust_level?(TrustLevel[3]) &&
+        @post.user&.trust_level == TrustLevel[0]
+      @post.hide!(@post_action_type_id, Post.hidden_reasons[:flagged_by_tl3_user])
+      return
+    end
+
     score = ReviewableFlaggedPost.find_by(target: @post)&.score || 0
     if score >= Reviewable.score_required_to_hide_post
       @post.hide!(@post_action_type_id)
diff --git a/spec/models/post_action_spec.rb b/spec/models/post_action_spec.rb
index cc2f449b1ca..80ff626e6c3 100644
--- a/spec/models/post_action_spec.rb
+++ b/spec/models/post_action_spec.rb
@@ -608,6 +608,20 @@ describe PostAction do
       post.reload
       expect(post.hidden).to eq(true)
     end
+    it "hide tl0 posts that are flagged as spam by a tl3 user" do
+      newuser = Fabricate(:newuser)
+      post = create_post(user: newuser)
+
+      Discourse.stubs(:site_contact_user).returns(admin)
+
+      PostActionCreator.spam(Fabricate(:leader), post)
+
+      post.reload
+
+      expect(post.hidden).to eq(true)
+      expect(post.hidden_at).to be_present
+      expect(post.hidden_reason_id).to eq(Post.hidden_reasons[:flagged_by_tl3_user])
+    end
 
     it "can flag the topic instead of a post" do
       post1 = create_post