Ok, last questions ::
1) Are you using any sort of plugin for Open Graph ?
2) Have you edited that file: templates\shaper_politcs\html\com_content\article\default.php
-----
Open Graph tags can added to that template, because right now they are not included.
In means that you can disable Open Graph plugin if you have any.
And paste following code:
//get image
$article_attribs = json_decode($this->item->attribs);
$article_images = json_decode($this->item->images);
$article_image = '';
if(isset($article_attribs->spfeatured_image) && $article_attribs->spfeatured_image != '') {
$article_image = $article_attribs->spfeatured_image;
} elseif(isset($article_images->image_fulltext) && !empty($article_images->image_fulltext)) {
$article_image = $article_images->image_fulltext;
}
//opengraph
$document = JFactory::getDocument();
$document->setTitle($this->item->title);
$document->addCustomTag('<meta property="og:url" content="'.JURI::current().'" />');
$document->addCustomTag('<meta property="og:type" content="article" />');
$document->setDescription( JHtml::_('string.truncate', $this->item->introtext, 155, false, false ) );
$document->addCustomTag('<meta property="og:title" content="'. $this->item->title .'" />');
$document->addCustomTag('<meta property="og:description" content="'. JHtml::_('string.truncate', $this->item->introtext, 155, false, false ) .'" />');
if ($article_image) {
$document->addCustomTag('<meta property="og:image" content="'. JURI::root().$article_image.'" />');
$document->addCustomTag('<meta property="og:image:width" content="600" />');
$document->addCustomTag('<meta property="og:image:height" content="315" />');
}
$post_format = $params->get('post_format', 'standard');
$has_post_format = $tpl_params->get('show_post_format');
if($this->print) $has_post_format = false;
here: templates\shaper_politcs\html\com_content\article\default.php
before closing
?>
<article
---
If you afraid to do that, just download a zip file , unzip and replace