title: Google tags manager. How to prevent loading custom tag programmatically?
body: <p>I'm working on site that uses GTM(Google Tag Manager).
  GTM includes some script(tag) from a site that not allowed in my country. It causes an error in console and I want to stop loading this tag. I don't have access to GTM account so I should do it with js. This script is <code>Custom HTML Tag</code> because when I try below code it stops loading:</p>
  
  <pre><code>    dataLayer = [{
          'gtm.blacklist':['html']
      }];
  </code></pre>
  
  <p>but it also stops loading other custom tags.
  How can I stop loading certain custom tag programmatically? </p>