Add blog tag filter to the top of blog page in #Brooklyn theme.
In blog.liquid add the code below just after the </h1>
that shows the blog title.
{% if blog.all_tags.size > 0 %}
<ul class="tags tags--collection inline-list">
<li{% unless current_tags %} class="tag--active"{% endunless %}>
<a href="/blogs/{{ blog.handle }}">
{{ 'collections.general.all_of_collection' | t }}
</a>
</li>
{% for tag in blog.all_tags %}
{% if current_tags contains tag %}
<li class="tag--active">
{{ tag | link_to_remove_tag: tag }}
</li>
{% else %}
<li>
{% comment %}
Use link_to_add_tag if you want to allow filtering
by multiple tags
{% endcomment %}
{{ tag | link_to_tag: tag }}
</li>
{% endif %}
{% endfor %}
</ul>
{% endif %}