// Get all posts with the access level of 'Member'
function members_get_member_posts() {
    $post_ids = array();
    $args=array(
        'post_type' => array('post','tribe_events','document'),
        'meta_key' => '_members_access_role',
        'meta_value' => 'member',
        'post_status' => array('publish','private')
    );
    $protected_posts = get_posts($args);
    if($protected_posts) {
        foreach($protected_posts as $p) {
            $post_ids[] = $p->ID;
        }
    }
    // return an array of paid post IDs
    return $post_ids;
}

// Hide all posts from users who are not logged-in or are not administrators or members
function members_hide_member_posts($query) {
    $current_user = wp_get_current_user();
    if(empty($current_user) || ($current_user->roles[0] != 'member' && $current_user->roles[0] != 'administrator') && (false == $query->query_vars['suppress_filters'])) {
        $protected_posts = members_get_member_posts();
        if($protected_posts)
            $query->set('post__not_in', $protected_posts);
    }
    return $query;
}
add_filter('pre_get_posts', 'members_hide_member_posts');